I want to get the American Thunder CB from flowmaster. It sounds really good. I like the deep rumble though. It's all in what you want and how much $$ you have. It's easy for a guy with say....a corvette...to say he wouldn't touch MAC, but for a college kid who works his *** off for his mustang and doesnt have cash layin aroundand wants to upgrade the exhaust, mac and flowmaster are good bets.

 

lol mac and flowmasters sound damn near the same. both mac and flowmaster have aluminum systems and both will rust if not takin care of( but it take like 3-4 years on average for them to rust out, unless u live by the water) BUT mac has a SS system to prevent that. i got mine for 313 off ebay(THR) and i love it. i had 0 fitment issues and the only problem iv had with it is excesive reving? but its all good.