darrinps

Google is your friend but...

I was always a big Flowmaster fan so:
HP-2 Series - Hushpower Mufflers

Dynomax too:
Dynomax Performance Exhaust | Mufflers | Race Bullet Mufflers

Borla:
XR-1 Sportsman Racing Mufflers - BORLA - The World's Most Winning Exhaust

Magnaflow:
http://www.magnaflow.com/02product/s..._universal.asp

Injen:
Injen Mufflers, Injen High Performance Mufflers