You can purcahse an exhaust and more than likely put it on yourself with a couple of hand tools and a saw. Diamond eye sells a nice kit as well as MBRP I am sure the vendors on the site can hook you up. I installed mine by myself and it took about two hours. All I used was a saw, 9/16 socket wrench and a floor jack 
__________________ 06 2500 CREW CAB 4X4 LBZ
4" DIAMOND EYE EXHAUST, KITTY RAN OFF!!!
DIABLO @ 85HP. 285/75 BFG's RUNNIN ON ULTRA 16's
PIONEER HEAD UNIT RUNNIN SCOSCHE AMP W MTX TWINS
AIR BOX IMPELLER REMOVED!! RESONATOR PLUGGED !!!
AUTOMETER ULTRALITE GAUGES IN POD. TRANSGO JR HERE BUT HAVE TO PUT IT IN NOW WORK RIG
O7.5 3500 CREW, LMM
ROYAL UTILITY BED 
SOME MODS, MOSTLY EXTERIOR |