Turbo 350 transmission crossmember. Will only work on Hardtop, Sedans, and Wagons. Custom tubular transmission crossmember that can be used on Turbo, 700R4, 200R4, and 4-speed transmissions. Replaces GM part # 3964816. See full list on jegs. If you want, you can drop in a Turbo 350, a Muncie It may have to be installed with the transmission slightly elevated and crossmember in place, and then lowered onto the crossmember. WILL NOT WORK ON CONVERTIBLE! Don't forget rubber mount also 1145 or 1146 depending on transmission. Exact fit for all four speed and automatic turbo 350 models. Stop looking for that hard to find used rusty crossmember and pickup a nice clean new one. The crossmember is constructed of CNC laser cut and formed 3/16" steel and utilizes the factory sub-frame mounting holes to allow for an easy 100% direct bolt-in installation with the use of basic hand tools. Crossmember is made of sturdy mild steel construction and utilizes the OEM sub-frame mounting holes to allow for an easy direct bolt-in installation. sti h0p1mje 8kwm hzgju 64fqglq boic o7d 2q7y wt 7zl