Re: Rear difussers finally!
Great idea on the inside of the tail pipes.
With the base models not getting the upgraded tips, I might try this mod myself. The base tips do not clean that easily since they are not nearly as polished and shinny as the non-base tips.
Let us know how the paint holds up on the tips.
I also think silver diffusers will look great on your Crossfire. I'm sure you will post a photo when installed.