The factory piping is probably 2 1/4 inches as it is with the other models.
So, for a tip, look for a 2 1/2 if you are just wanting one to slip over the old one.
"I'm not driving too fast...just flying too low"
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
90 7up vert - new project-07 DSG Focus -DD