Originally Posted by Knightmare69

You won't find a diffuser for the single side exhaust, I've done an extensive search as I didn't want to change to a dual exhaust just for the diffuser. Your option besides custom fabricating one is to get a real lip with a diffuser built in. I got the carlsson one, it's a 2 piece rear lip that has a diffuser. Truthfully though it doesn't do anything. If I can find a cheap enough diffuser made of PP material I may cut it up and mold it into a single side exhaust diffuser.