72 duster 440 swap

Yes was a slant 6 my wife bought me a set thru trans dapt
never experienced trans dapt, but heard there were some fitment issues. I'd personally start with the tranny, and get it mounted first. We know the cross member is in the correct location. If you have the correct tranny mount for the car, then we know the tranny would be located correctly. It's just a matter of seeing what's wrong with the motor mounts at that point.