Well I was told that if I want to run a big roller cam I needed to extend the Collector in the tails as much as possible. So with my friends help( Can Tig like a Mother F ER) We cut em up and ended up anding 11 inches to the original inside pipe. I used 304 Stainless on the 4 inch inside and the 5 inch outside. Starting the come together. Here are some pics from last weekend.