I went to one place this weekend and they recommended the flowmaster 50 series. They said it would be the cost of the kit I choose + $125.00 in labor. I asked about just doing the muffler and they said it would be almost as much as what the kit cost because they would have to get adapters. This sounds like a bunch of poo to me, just seems high. But I really can't say that is for sure till I get something to compare it too. I am hitting 2 more places tomorrow. Here is a flowmaster clip I like the sound of on Youtube, for some reason though I am stuck on the Magnaflow. They did recommend Borla, and Corsa but said I'd be at least a grand for one of those.