not sure where georgia got her exact one though. I know CNN.cn has pretty good stuff. I've ordered metal backs from them. For actual functioning parts I always use eTech Parts though. They offer original, OEM, and generic but all their stuff is top notch.
Seeing that reminded me of the days of changing the faceplate, backplate and battery. It looks nice but like the people who don't want to sully their phone with Jailbreak , I prefer the stock look. I would so do it to my iPad though