looking for the most out of my h/i/c 306 i was looking into getting a set of long tubes. Right now I have 1 5/8in ford racing shorty headers, 2 1/2in h-pipe, and 2 1/2 mac pro dumps. I was thinking bout going with 1 5/8 long tubes and a mac prochamber for some extra power. How much more hp can I expect at the wheels over the other exhaust set up?
Andrew
Andrew