everything ZR1 said is what i would have said. for a lightly modded car, which is what youre going for then youre not going to need the numerous amount of supporting mods like most of us did when we went past a '3.4 setup'.

also, FYI, the S&S headers are no longer being sold since the company went out of business. its a shame really because they had one of the best sets on the market and i really preferred them over many, many other brands.