Thanks for the tips. Yeah, I'm thinking of just doing something simple. Might try and find a shop around that will just cut out the mufflers and replace them. I want to keep the stock tune, for the warranty business and my reluctance to deal with handhelp tuners, so I'm worried about the AFM kicking in and making any custom exhaust I get sound ricer when the 4 cylinders cut out. I'm also trying to keep it subtle, so no roars, but I do want my car to turn heads and let people know there's a V8 inside. Also worried about interior cabin noice levels. Ugh, so much to consider!