Engine Cylinder Head Volume Measurement Kitthis cc kit gives you the ability to meaure cylinder head combustion chamber volume for an economical price.

Factory Rear End

giving you much improved repeatability on the street

Hose End Style: Straight / 45 Degrees

upper control arm mounting bracket

-inch laser-cut plate steel with 1 5/8-inch DOM steel tubing

The most consistent

and longer life

This can also have the added benefit of reducing engine bay temperatures

eliminating any cradle deflection caused by the factory single sheer mounts

This CAD-designed piece is 3D-printed from an extremely durable and temperature-resistant polymer with brass thread inserts for long service life

Mounting bolts and adjustment shims included

The UMI Performance adjustable rear control arms kit is designed for 1971-1975 GM H-Body vehicles