Our CrossmemberFits Years: 75-81 F Body, 75-79 X Body
Fits Transmissions: TH400, 2004R
We recommend a polyurethane transmission mount. The GMTM is sold separately.
For the 1975-1981 frames, the distance between the crossmember frame mounting holes is 31-3/4". To ensure proper transmission crossmember selection be sure to measure your frame before you order.