This crossmember will fit 1996 and later 4L60E, and 4L65E transmission for LS engine swaps.
We recommend a polyurethane transmission mount. The GMTM is sold separately.
For the 1970-1974 F-Body frames the distance between the crossmember frame mounting holes is 30-1/2″. To ensure proper crossmember selection be sure to measure your frame before you order.