Check with ECS Tuning for the body parts. They are less expensive than genuineaudi when I checked, but get the parts directly from Audi. I just ordered a new bumper and fender from them at a substantial savings, and the parts I received were brand new genuine Audi parts. Shipping was also very reasonable, at $150 flat for both shipped anywhere in the US. Just my .02.
I also have both my stock intercoolers laying around, along with all of the auxiliary radiator parts and the secondary air injection parts if you're interested in any of those.