Currently installing a 350 with a short tail 350 trans behind it in a 39 1/2 ton. Using a cp mount system that fits with a little work to narrow to fit frame. Another issue is getting exhaust to fit in frame area and clear steering box if you intend on using the original front end. You can fit it in to clear steering box and clear the radiator. It will be close but can be done. Using a rear end out of early Camaro that fits . Just had driveline made and working out rest of issues.

Ed