Ok finished the header pnp. First off it was super easy, Mike (skoloseven) and I were able finish the whole uninstall, pnp, and re install in about 4 hours. As far as gains, I did some pulls but the conditions arent the same to run the dyno software (also I want to do it on the same road and temp, so maybe this evening.) Butt dyno says the car feels strong, drove nicely. It feels as though it lost a little bottom end but gained up top. I'll post some plots as soon as I get them. All in all great time working on the car, Mike is a stand up guy, very knowledgable and helpful.