The Ringbrothers’ Groundbreaking Build

The renowned car builders at Ringbrothers are bringing an 80s classic to the SEMA show. The ‘Invadr,’ is a 1987 Buick Regal Grand National that redefines the power and legacy of this classic muscle car. Equipped with a monstrous 1,246-horsepower 3.8-liter twin-turbo V6, custom chassis, and artfully upgraded aesthetics, the Invadr retains its iconic appeal while delivering a modern performance edge.

Under the Hood: A Beastly 1,246 HP V6

The Invadr’s heart is a heavily modified V6 from Duttweiler Performance, a California-based shop crafting high-horsepower engines. This engine delivers an astonishing 1,246 horsepower and 1,000 pound-feet of torque at 32 psi of boost. With a 50 psi setup, the Invadr could theoretically hit a staggering 2,000 horsepower, making it potentially the fastest Ringbrothers creation to date. The original Buick GN had 200 horsepower and 300 lb-ft. of torque.

### Key Performance Specs

Engine: 3.8L Twin-Turbo V6 from Duttweiler Performance
Power Output: 1,246 HP, 1,000 lb-ft torque
Transmission: Tremec T56 Six-Speed Manual
Boost Capacity: 32 psi (up to 50 psi potential)
Rear Differential: Ford 9-inch
Chassis and Suspension: Crafted for Precision
Built on a custom Roadster Shop chassis, the Invadr sports adjustable Penske shocks for an optimized ride. Custom HRE wheels hold Michelin Pilot Sport Cup 2 tires, giving the Invadr excellent grip, while C6 Corvette ZR1 carbon-ceramic brakes provide the most stopping power.

Design and Bodywork: Refined Aggression

While the Invadr’s powertrain takes the spotlight, its design modifications add a modern flair to the Grand National’s 80s, all-black styling. New stainless-steel front and rear bumpers, custom side skirts, and fender adjustments lend an updated aesthetic while maintaining the car’s classic looks. Carbon-fiber accents such as a hood vent and rear spoiler add just enough, complemented by a ‘Dark Vader Gray’ paint job.

Exterior Features

Bumpers: Custom Stainless Steel
Body Modifications: Front Fender and Side Skirt Adjustments
Carbon Fiber Accents: Hood Vent, Rear Spoiler
Paint: Dark Vader Gray
Interior: Race-Ready Elegance
The Invadr’s interior reflects the same as the exterior – just enough changes to modernise, but still feel original. Equipped with a full roll cage and carbon fiber accents, the interior is custom-finished for style and functionality. Every detail from the dashboard to the trim is thoughtfully designed, with the addition of a parachute button hinting at its race-inspired nature.

Legacy Meets Innovation: A Tribute to the Original Grand National

The Buick Grand National of the 1980s became an icon in American muscle car history, showcasing how a turbocharged V6 could stand toe-to-toe with traditional V8s. The Invadr pays homage to this legacy, amplifying the original’s strengths while integrating state-of-the-art performance features and engineering innovations.

### Build Statistics

Build Time: 4,900 hours
Builder: Ringbrothers
Debut Event: SEMA Show

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