UMI Performance 78-88 GM G-Body 12-Bolt Swap Adjustable Upper Control Arms- Roto-Joints - 3039-B

UMI Performance’s 12-bolt swap control arms are designed to bolt a 1964-1972 GM A-Body 10-Bolt or 12-Bolt rear end into a 1978-1988 GM G-Body; this includes Monte Carlo, Malibu, El Camino, Regal, Grand National, Grand Prix and Cutlass. These upper control arms are built at the correct angle to attach to the G-Body chassis as well as the A-Body rear end “ears”. These upper control arms are a must any time this swap is being completed. Using the factory control arms will cause drastic rear end bind and incorrect driveline angle, this leads to traction lose, vibrations and unsafe handling. These control arms are supplied adjustable for easy on car adjustability to set correct pinion angle and allow adjustment for installation if needed. Adjustments are made using an aircraft quality 4140 chromoly heat treated adjuster and UMI spherical Roto-Joint’s. The Roto-Joint allows rear end free movement when high handling, auto cross or road race is a concern but also works excellent as a drag race item by eliminating rear end bind. Upper control arms feature TIG welded construction, 4140 chromoly tube adaptors to ensure thread durability and brilliant powder coat.

This Part Fits:

Year	Make	Model	Submodel
1978-1987	Buick	Regal	Base
1988	Buick	Regal	Custom
1982-1983	Buick	Regal	Estate Wagon
1987	Buick	Regal	GNX
1984-1987	Buick	Regal	Grand National
1978-1988	Buick	Regal	Limited
1982	Buick	Regal	Limited Turbo
1978-1982	Buick	Regal	Sport
1983-1986	Buick	Regal	T-Type
1978-1981	Chevrolet	Malibu	Base
1978-1983	Chevrolet	Malibu	Classic
1978-1980	Chevrolet	Malibu	Classic Estate
1978-1981	Chevrolet	Malibu	Classic Landau
1979-1980	Chevrolet	Malibu	Classic Sport
1979-1980	Chevrolet	Malibu	Estate
1979	Chevrolet	Malibu	Landau
1979	Chevrolet	Malibu	Police
1979-1980	Chevrolet	Malibu	Sport
1979,1981-1988	Chevrolet	Monte Carlo	Base
1983	Chevrolet	Monte Carlo	CL
1978-1981	Chevrolet	Monte Carlo	Landau
1986-1988	Chevrolet	Monte Carlo	LS
1978,1980	Chevrolet	Monte Carlo	Sport
1983-1988	Chevrolet	Monte Carlo	SS
1980	Oldsmobile	Cutlass	Base
1980-1981	Oldsmobile	Cutlass	Brougham
1980-1981	Oldsmobile	Cutlass	LS
1978-1979	Oldsmobile	Cutlass	Vista Cruiser
1979	Oldsmobile	Cutlass	Vista Cruiser Brougham
1978-1988	Pontiac	Grand Prix	Base
1981-1987	Pontiac	Grand Prix	Brougham
1984-1988	Pontiac	Grand Prix	LE
1978-1983	Pontiac	Grand Prix	LJ
1988	Pontiac	Grand Prix	SE
1978-1980	Pontiac	Grand Prix	SJ
1988	Pontiac	LeMans	Aerocoupe
1988	Pontiac	LeMans	Aerocoupe YL
1978-1981,1988	Pontiac	LeMans	Base
1978-1981	Pontiac	LeMans	Safari
1988	Pontiac	LeMans	SE
1988	Pontiac	LeMans	Value Leader

Please note that product may vary from image. If delivery time is a concern, please contact us prior to purchase. 

Get the best prices and service on UMI Performance parts at Armageddon Turbo Systems (www.goturbo.net). We offer UMI's full line with the best service possible. Armageddon Turbo Systems not only can supply with the finest Turbo components, but also the widest range of aftermarket parts available. We offer the pricing and selection customers want!

About UMI Performance-

At UMI Performance, we are committed to crafting top-tier suspension components that elevate your car or truck's handling performance. Proudly partnering with leading USA steel suppliers, we source the finest North American mined and milled steel. This ensures our street and race products consistently set the industry standard for quality and reliability.

Every UMI Performance component is engineered with precision, showcasing unparalleled tolerances, strength, and weld penetration. As a 100% American company, we take immense pride in designing and manufacturing all our products in-house at our state-of-the-art facility in Philipsburg, PA. This exclusive manufacturing process grants us complete control over product quality and allows for seamless design enhancements.

Choose UMI Performance for superior craftsmanship and a commitment to excellence that fuels your passion for performance. Experience the difference that dedication to quality makes—experience UMI.

Our team of skilled engineers leverage cutting-edge geometry and advanced manufacturing techniques to craft bolt-on, factory-replacement parts that elevate your vehicle's handling, performance, and reliability.

Once prototypes are manufactured, they undergo rigorous testing at UMI Performance’s state-of-the-art Race Shop—a 20,000-square-foot facility fully equipped for testing and fabrication. Here, these prototypes are installed on designated platforms from our Team UMI fleet of cars and trucks. They are then put through their paces in real-world racing scenarios, whether in competitive environments or at our dedicated UMI Motorsports Park.

This comprehensive race testing process not only allows us to fine-tune each design but also helps us identify the optimal product pairings for our kits and tailor recommendations for our customers. Our commitment to excellence doesn't stop at production; we continuously gather product feedback and refine our offerings to align with the latest manufacturing technologies and evolving racing demands.

Experience the difference with UMI Performance—where innovation meets precision on the racetrack.

About GoTurbo.net/Armageddon Turbo Systems​

Get the best prices and service on UMI Performance at Armageddon Turbo Systems (www.goturbo.net). 

Armageddon Turbo Systems is a company specializing in aftermarket turbocharger systems for various vehicles, particularly trucks and muscle cars. We offer complete turbocharger kits designed to significantly increase engine performance and power output.

Armageddon Turbo Systems gained prominence for their innovative approach to turbocharging, providing bolt-on solutions that allow enthusiasts to add substantial horsepower and torque to their vehicles without extensive modifications. Their kits typically include all necessary components for installation, including the turbocharger unit, intercooler, piping, fuel system upgrades, and engine management solutions.

​Get the best parts and pricing on UMI products today at www.goturbo.net - Armageddon Turbo Systems!