Gibson or factory headers Borla high flow 3 in cat, and 3 in out the back. it is nice and quiet in a small block rumble way until you stomp on it then it shrieks like a raped ape
borla has the best sounding exhaust for those vehicles,here's their site,i got them on my 2001 model and it sounds real good,good luck, http://borlaexhaust.com
true dual cherry bomb glasspacks will sound amazing with the 5.9 and be super loud.. they do not last as long as other mufflers (fm/mf) but they are also half the price