Long story short, I'm 18, don't exactly have a lot of money to drop into the 03 gt, and am looking to increase the power of my gt. Because of school I can't work as many hours and am curious as to what some good bolt ons or other mods are for our cars that give quick hp. Any recommendations? Btw I already have an o/r x-pipe w/ flowmaster 40 series mufflers. Also, I have very limited knowledge about performance mods for our cars and am trying to learn more. I can't install anything myself and wouldn't want to attempt it because I don't want to mess anything up. I'd have to take it to the shop down the road that does a lot of work on mustangs.