i am in the middle of the same thing i am just starting to put aftermarket parts on. i am starting with headers, h-pipe, air intake. looking to do alot more after the car is paid off and not a daily driver. if you car is going to be a daily driver i would not recomend doing alot to it. just make it breath and it will be happy. also an electric fan works nice i have one and the car stays nice and cool.