UMI Performance rear upper control arm mount for 1965–1966 GM B-Body replaces the stock chassis mount and is CNC machined from 0.188" thick steel. Precision bent and finished in bright red or gloss black powder coat, it includes new grade 8 hardware and also provides instant center adjustment by lowering or raising the upper arm. Sold each—verify whether your vehicle uses one or two upper control arms.
UMI Performance 65-66 GM B-Body Upper Control Arm Mount