Okay, don't laugh and forgive my ignorance on the subject. I'm an "old timer" and have been driving a '65 since 1985. My wife has a 2000 GT and my best friend has a 2000 GT. Both are sort of looking at upgrading their motors with a swap out. Basically one of the cars has 180k and the other has 317k . . . no issues EVER from either motor. So, without getting too wild, what are their options for relatively easy swap (motor and tranny)? I'm not really worried about what turbocharger fits what or anything like that. What I'm looking for is something like "the 2009 4.6L with three valves is an easy swap and has x more horsepower, and it will hook up with the existing tranny" or "whatever you do, DON'T use the 2001 motor made in March with the automatic because . . .". Not looking for major details, but some initial guidance. Thanks guys!