jfor441

I know Kooks headers are $$$$.... How much HP gain over MAC or BBk are they? I am building a NA setup and want to get the most power I can.

lighswitch

They are going to give you similar results, maybe a few more than others, the differencewith kooks is that it comes with 3' collectors so either larger tubing or custom 3 to 2.5 tubing and with larger pipes you will probably loose a decent amount of low end if your no F/I.