Daz- The first thing in the header end is a tapered reducer that goes down to 1" in diameter. I assumed that was in there for back pressure. After all this discussion, I decided to totally gut my spare set of pipes and make some other type of baffle system. Was thinking of a pipe with holes in it that was small enough in diameter to go past the screw bosses for the hangers. Those 2 little nubs sticking into the inside of the pipe are all thats in there besides the stock baffle setup.
