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GV Extension Housing
Gear Vendors offers a full line of transmission extension housings and adapters for popular GM two-, three-, or four-speed transmission applications such as 4L60E, 4L80E, 700-R4, Muncie, Powerglide, T10, and TH350 or TH400. In our case, we went with the 350S extension housing since the 350SS was going to be a bit short. Note: Some transmission crossmembers may need to be modified for proper fitment.