Super Comps are good headers. I like the 3" collectors. Gives a little more room to work. Try to get as tuned as you can. Does not mean as much in power terms with the full exhaust on and all corked up, but you are only going to buy these tubes once so go ahead with the better headers. I have Supercomps on my Z/28 and they never leak or show any signs of cracking/warping problems. JMO Sam
