The exhaust on mine is a flowmaster set up, sounds great on the low RPMs no drone, but at WOT all i hear is engine, i ran Magnaflows on my tbird, even though it was an 8 the Magnaflows sounded Sick, had a lot of heads turning, its really just preference, depends on what you want to do to the exhaust, keep it 2-1-2 or duals all the way back, having 2 pipes will really change the tone and you may want to use a different brand of muffler, i had a flowmaster cat back, then opened it up with 2 pipes, didnt like the sound so i went to the mags and it was perfect. If i had the money i would put Headers, Magnaflow cats, H- Pipe and dualies out to the back with Twin Mags or SLP Mufflers, that would sound really good.