We designed this Hurst transmission crossmember to fit 1968-1972 GM A-bodies such as the Chevelle, Cutlass, 442, GTO, Tempest, LeMans, Skylark, and also the Grand Prix (G-Body) applications when installing a Tremec TKX and TKO 5-speed or Tremec Magnum 6-speed transmission. Much stronger than the stock unit, this crossmember helps maintain the correct transmission/driveshaft angle and is adjustable for both coupes and convertible chassis. The crossmember has a durable black powder coating and includes all necessary hardware for installation. Also fits El Camino, station wagons and other vehicles that are based off the A-body chassis. This crossmember is a great choice to replace your old beat-up original crossmember and can be used with GM TH350, TH400, and TH700R4 automatics along with many GM manual transmissions. Be sure to check out Hurst tunnel patch part #69510005 (available separately) designed specifically for transplanting a Tremec transmission in your A-body car.