Upper Control Arms, DOM, On-car Adjustable, Rod EndsLaunching harder, reducing wheel hop, and adding cornering consistency to your 1964 1967 GM A Body is easy with adjustable upper control arms from BMR Suspension. The stock stamped steel control arms with soft rubber bushings deflect under load and absorb power instead of transferring it to the tires. BMRs polyurethane, on car adjustable tubular upper control arm for GM A Body (UTCA044) is manufactured from heavy duty 1 1 4 inch DOM steel tube. The