Originally Posted by MAYAman
Ummm but the crossfire bumper opening for the stock exhaust is not removable. How do you get past this? Cut it off?
Having done some work with the diffusers I can say yes the bumper skin would need to be trimmed. Look underneath that area and you will find a heat shield that wraps around the exhaust (like the heat shield under the hood at the back of the engine). That shield will require reshaping as well.
I have a couple tricks up my sleeve on my bolt on diffuser. I will post pics in the next week. I think you will all be pleased.