So I bought this Galant with over 300k miles and a bad head, so the first thing I'd like to do is swap out the motor and trans. It's a base model with a 4g64 in it. The question is, would I be able to swap in a 4g63t or something else? The current SOCH has to go. Any other, better engines that have the same motor mounts would be pretty convenient. So, are there any that would fit, or is this project going to be more than I bargained for?