As one of those in the LT Header Club (LTHC):lol: you will not miss a thing...I promise. I went with Kooks because of the reputation they have; however, I know that American Racing Headers are also considered one of the top choices when it comes to construction/ quality.
Well I just started thinking if I end up paying someone to do the install instead of doing it my self I might as well get the most out of it. But it seems like the H pip is what gives it that "bullitt" sound.
Yes you would have to change the H-pipe when putting on midlength or full long tube headers. You could use the stock H-pipe with shorties. You could go with midlengths buy there h-pipe and block, or delete the cross over for a similar effect.
I have a 4.6 dyno test book and it showed about 5 flywheel horsepower on a stock engine if I remember correctly that was a 2v not the 3v. I dont think there would be much differance in hp, but fit and finish between brands definately.
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