Alright, I am getting the T5 in the cobra next weekend. The 18th. After the 5 speed is in, i am going to put on the 289 heads, and stock 89 shorties (for now) along with a 2.5 inch off road h-pipe. Right now I have 351 manifolds, going to a custom 2.25 stock h-pipe with 2 cats removed, and a flowmaster cat back. So will the shorties and 2.5 exhaust help me any? I dont mind if not, i want it for the bolt in capablilty, so if i upgrade to new cat back, or new shorties, they bolt right in. Also, after the 5 speed, heads and exhaust, Im going to save for a 150 shot of NOS. Then I will paint it, and have a final car. (for now at least) nothings ever finished. But for the next few years, that'll do it. What do you guys think? Any tips or suggestions?