Adjustable length upper control arms for use on all 1964-1967 GM A-body cars. Units feature adjustability without having to have either end removed from the vehicle via a “turnbuckle” style design featuring RH/LH threads in the center and double jam nuts. The center of the arm is hex shaped aluminum and is polished and blue anodized. Housing end of the arm features a “fork” for mounting the arm to the housing, and the housing end of the arm features Currie’s Johnny Joint urethane bushed rod end that allows for 30 degrees of overall travel. This joint is fully greasable and rebuildable.