Have a '70 pan fill C4 from a Galaxie in my son's '65, has the large 164 tooth flywheel/bellhousing. He needs a higher stall converter, have determined which one after a call to PTC. He actually already has one that is pretty close to what he needs, but it is for a 157 tooth small bell. I have read that a 157 tooth flywheel/bellhousing can be used on a 164 tooth, that it will bolt on with the pump bolts. We have everything to do the swap if its possible, so zero money, or simply buy a new converter for the 164??