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We temporarily installed the body tub to locate where the engine should be positioned. Most of the hack-together motor mounts that Hazel gave us with the engine were reused when attaching it to our frame. However, the SM420 does not have any mounting provisions, so we fabricated a bracket that bolts to the tranny housing and uses a common rubber GM TH350 mount. This GM mount is easily adapted to fit on the original M38A1 transmission crossmember that sits in nearly the stock location.