yea man the 94-95 are 5.0 and 96 is the same body but different tail lights shuold be easy to swap but dont see y u wanta do that imo 4.6 motor way better!
Yeah, it's really going to be more trouble than it's worth. I'd just look around for a different car if I were you. It's easier just to swap out a set of tail lights than it is to swap a whole drive train. I'm a big fan of the mod motors myself and I drive a 5.0L, but if pushrod power is what you're looking for, have at it!