I have a 2010 GT that I am swapping out the factory exhaust system for a full american racing long tube headers & catted X pipe. I'm just not sure which muffler kit I want to go with. I will be eventually installing a SC, ford racing cams, and having it tuned. I do wish to finish off the exhaust with a full stainless muffler set, but have heard conflicting info on what mufflers sound best. I don't need to have my fillings rattled out while cruising, but do want people to know I'm around when I get on it. Any lessons learned by others would be a great help. I see and hear a lot of stories of people installing a muffler set for a few days and swapping it out soon after. Anybody using one of the Corsa mufflers? Magnaflow?