I got back and forth on non-factory body parts in general, but there are some that should be removed from this planet (IMNSHO). I found myself in a position where I needed a front fascia, and I wanted something that had never been painted. So I got a Wings West. I'm somewhat happy, but starting to wish I'd gone with OEM.
I'm somewhat of a purist, which is why I sold the Greddy SP exhaust that was on the car and went back to stock. I wouldn't mind an aftermarket one, so long as it's similar to stock, but I'm not ready to spend the $$$ for what I want.