Hi guys. I just picked up a 96GT on the cheap, and am purchasing a set of PI heads/intake for it. I've read a bunch of the threads on here, so I know what parts I need, etc, but what I can't find any concrete info on is this: 1) Do I NEED a tune? Just doing a direct PI head/IM swap. I'm sure a tune will make everything do better, but the headswap is all I'm doing for now. Eventually I'll do more and get it tuned then. 2) Do I need/want 24lb injectors, or will the stock rails/injectors do fine? Thanks!