K, i'm gonna drop my money and get me a 4-1 and speedstate catback. I already know there's its a little short or something and need a couple inches of pipe to connect the two, but I think I read somehwere that the 4-1 header for a 2ktib is 2.5" and the speedstate's exhaust is 2.25"? is this true?
what sort of gain would I expect from this setup?

ta
-nico