and we've decided that it's best I buy a ttz and work on it to get my 600hp. I think I'm going to keep my N/A for a daily driver, seeing as a 600hp car might not be such a good idea to drive at times, and (given that I'll buy a tt to put in the garage and work on) I'll buy parts over time and assemble them onto my tt as the money comes in. Don't get me wrong with all my questions, I'm just trying to figure out what would be best.. I thought at first it would be a great learning experience to swap out engines but it's probably over my head at this point in the game, so now I'm just glancing down different paths to take to fulfill my dream :) Does rebuilding the engine fix a lot of the problems with engine troubles or should I look for a pretty strong engine? I don't want a lemon but I don't want to buy a mint z and replace all the parts to get my 600hp you know?