Ok I have read the articles on long tube and short tube headers. I have decided on long tubes, the most bang for my buck I believe is going to be PaceSetter 70-2267's, would like to get kook's but don't have that kind of cash. When I do the header install I plan on changing my Cats out to Magnaflow 99006HM Universal Cat's. Where I need the feedback is on the whether I should install a Y pipe, run true dual out, run an X Pipe? When I start this project I am looking for the best sound and HP Gain. I know that vehicles require some back pressure and I don't want to do all this work and loose HP. I plan on doing most of the work myself except for the welds. Also, what else would anyone recommend as far as the exhaust, true dual or dual in and dual out exhaust?