G Force Performance RCF1-400 Crossmember, Transmission, Steel, Black Powdercoated, GM, Camaro/Firebird, F-Body, 1967-1969, TH400, 200-4R, Each.  These G Force Performance steel transmission crossmembers allow you to run a true dual-exhaust system with most popular GM transmissions. They have a patented double-hump design, so you don't have to compromise ground clearance by running pipes under the crossmember, and they're a complete bolt-on deal - no custom fabricating or realignment is needed. They're made from 2 in. x 3 in. boxed tubing (1/8 in. thick) to handle the frame-twisting power of big blocks.Applications: * 1967-1969 Chevrolet Camaro* 1967-1969 Pontiac Firebird
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