R&D Performance Fabrication, LLC

05/08/2026

Selling my spare Roadster Shop SPEC chassis setup. This is a serious high end foundation for a custom build, finished and ready for your drivetrain and body setup.

Fits 1978-1988 G body platforms including:
• Grand Prix
• Cutlass
• Olds 442
• Monte Carlo

DOES NOT fit Regal or Malibu bodies.

$25,000
Located in Ortonville, Michigan 48462

Features:

• Fully sanded and blasted chassis
• Custom sprayed Gunmetal Grey Steel-It stainless steel encapsulated coating
• Roadster Shop exclusive “Laser Rails” precision CNC laser cut and contoured chassis
• Crossmembers and chassis bracing designed to allow full 3” exhaust routing
• Adjustable drop-out transmission mount
• Utilizes factory body, bumper, and core support mounts for true bolt-on installation

Front Suspension:
• SPEC IFS
• RS SV by Fox fixed valve coilovers
• Power rack and pinion steering
• Upgraded front sway bar
• Easy adjust upper A-arm eccentric mounts for fast alignments
• RS forged knuckles with OEM performance sealed bearing hubs
• Roller Pinto front spindles

Rear Suspension:
• Parallel 4-bar rear suspension
• Single adjustable billet coilovers
• Aluminum Ford 9” center section
• 3.73 rear gear
• 31 spline axles
• 1350 yoke

Additional Parts Included:
• LS / LT motor mounts included
• SBC / BBC compatible
• Energy Suspension body bushings included
• Stainless Steel Rick’s “Thirsty G” 27 gallon extra wide symmetrical fuel tank
• Guni wheels

This is a professionally built rolling chassis with quality parts throughout. If you understand what it takes to build one of these correctly, you already know the value here.

No trades. Serious buyers only.

04/21/2026

900 hp overdriven LT4 supercharged package with LT5 style 2650 supercharger. Wegner billet drive, valve covers, and LT4 fuel system included. This setup is ridiculously clean. $39,999 final price. Can also configure full driveline with a GM 6 or 10 speed trans and controller kit.

04/21/2026

Tax season's here and you're probably in the market for a new engine after last year's streetcar take over. We've got around 30 high performance LSX and LT options left, ranging from 500hp to over 1400hp. From naturally aspirated to Whipple 3.0s, we've likely got what you need. And yeah, these are top tier engines, not junkyard scraps. Don't fall for the scammers claiming these cost $5000!

03/20/2026

LSA build alert! This one's a monster, with 900+ crank HP and a laundry list of upgrades. New block, LSX b15 assembly, ported supercharger, and more. $23,999. Starting today, don't sleep on it.

01/28/2026

We are now offering the new Fabworkz v2 GM throttle body to Hellcat supercharger adapter fl**ge with a 102 / 103 mm inlet.

This adapter allows you to run a GM or aftermarket throttle body on a Hellcat supercharger while supporting both DBW and DBC setups. It is compatible with up to 102mm and 103mm throttle bodies. We will also be releasing a DBC bracket for customers running cable driven setups.

Get Your Adapter today for only $110 at
https://rdperformancefab.com/products/gm-throttle-body-to-hellcat-supercharger-adapter-fl**ge

12/28/2025

New LSX B15 on the stand getting mocked up.
Wegner compact covers are on, LSA blower is getting Cerakoted in house, and it’ll be finished off with a black Wegner high mount drive kit.

Built for boost, reliability, and clean packaging. This one’s going to be a solid piece when it’s wrapped up. Let us know how we can help with your LS or LT builds.

12/11/2025

Please share 🙏🏻

🔥 NEW RELEASE: Pro Lithium X Black Edition (12V) 🔥

The wait is over. The all-new Pro Lithium X Black Edition is here — lighter, louder, and meaner than anything we’ve ever built. Coming in at just 7.7 lbs with a monster 1350 cold cranking amps, this compact powerhouse is built to wake up even the nastiest engines with zero hesitation.

With 25AH of capacity, rock-steady voltage, and the durability Detroit Battery Co. is known for, the Black Edition isn’t just an upgrade — it’s a statement. Sleek design, bright neon detail, and Michigan-built quality from top to bottom.

If you’re serious about performance, this is the battery you bolt in when second place isn’t an option.

Pro Lithium X Black Edition — built for racers who expect more.

Link in comments 👇🏻

12/08/2025

Brand New Aluminum 6.2L LT1 with Whipple 3.0 Supercharger and Black Drive J***y Accessory Kit

This is a brand new LT1 crate engine that has been upgraded with a Whipple 3.0 supercharger. The setup is built for anyone who wants a strong and reliable package that is ready for real power. The supercharger comes fully installed with the standard Whipple components and hardware. LT4 Injectors and GDI fuel pump installed.

The engine is equipped with a complete black Drive J***y accessory drive kit. This includes the alternator, power steering setup, brackets, pulleys, and the correct belt routing for a clean fit. Everything will be mounted and aligned on the engine.

The engine has zero run time and has only been unwrapped for inspection and photos. Nothing has been modified or altered from factory specs besides the supercharger installation, fuel system and the accessory drive kit.

This is a good option for anyone working on a Hotrod, Lt swapped truck, or any custom build that needs a dependable factory LT foundation with the added power of a Whipple. It is stored indoors and ready to ship or pick up.

Will come with coils, wires and black valve covers not pictured. Upgraded billet valve covers are an option as well.
If you need more details, more photos, or shipping arrangements just let me know. Price is $24,999

12/03/2025

In stock and super easy to install on your gen 5 LT

Harrop is proud to release the innovative TVS2650 Supercharger, originally designed as an upgrade for the factory LT4 TVS1740 Supercharger on the ZL1 Camaro, now available for the LT1 Camaro 2SS. The Supercharger upgrade utilises the largest, most-efficient rotating group ever produced by Eaton, the...

12/01/2025

These things work awesome and saves you from buying a jackshaft idler kit too

Big news dropping today! 🔥
Had an awesome call with a customer this last week who’s building a serious street/strip monster. He loves our LSA Jackshaft Flex Drive for the Hot Rod 2650… but he really wanted to run a low-mount dry-sump setup.

His question: “Can I use your high-mount tensioner bracket with the Jackshaft Flex Drive?”

I wasn’t 100% sure as the thought had never crossed my mind… so I bolted one up in the shop today. It fits. And it fits perfectly. 😎

That “happy accident” just unlocked a whole new level of flexibility. Starting very soon, you’ll be able to order the Jackshaft Flex Drive with TWO tensioner options:
✅ High-Mount Tensioner → Compatible with low-mount A/C or low-mount dry sump systems
✅ Low-Mount Tensioner → Compatible with high-mount A/C

Basically, no matter how you want to run your accessories, we’ve now got you covered.
All these years of obsessing over clean packaging and maximum clearance are paying off in ways I didn’t even expect.

Website options and pricing coming soon, along with clean photos of ALL the possible configurations.
Who’s excited for the most versatile LSA jackshaft drive on the planet? Drop a like or a comment if this just solved your packaging nightmare!

11/29/2025