Alright well I wouldn't worry about your govner that much you don't need to be doing 107 if you can't trap it. And these cars have a very week 4th that will fall apart if you shift into it at wot. So one of the things to defenitly get Trans wise is a hardened 4th along with many other things.
Turbo will make the most power but your not going to get a good turbo setup for less than 2 grand. You could top swap for around 700 if you did it yourself and shoped around. These cars also can't be chipped you need to get it tuned. To start out what you should do is U-bend delete, or a whole new aftermarket downpipe, Ported exhaust manifolds maybe front Power log. Make yourself an intake. Then you need to decide if you wana top swap or not, if not go with an hv3 and rockers or cam. If you top swap your getting different heads which you could also do rockers on for more power or you could do a cam. That would get you started.