Sure thing. The downpipe is cake to coat, and easy to install. I've done it enough times that it usually only takes me an hour or so with jacks.
I don't go to MAC. Bill is an ass in my opinion. Revolutions has a lot of positive things said about them, but I've never used them. Harvey is who I've gotten tuned from in the past.
I'm trying to take a tuning course in april if my PTO request gets approved. If it does, and I graduate, I'm willing to help you tune your car.