I recently picked up a SM 319 OD transmission and recently read that I would need a pass car bell housing because they are threaded on all four bolt positions, where the truck type are upper threaded and lower bolts to the transmission. Can I threw bolt and nut the two lower mounts? Grade 8 of course. Trying to get all my ducks in a row before I tear into this hopefully great upgrade. Truck is a 1967 Chevy
