jgiguere--thanks for all the info. Since I'm still just piecing this together in my head, that's all very helpful. The projectors (TSX) are the real deal. I still haven't decided on the rest of the stuff, though. Got any suggestions on ballasts? I'm not modding the high beams, just the low-beam projectors and probably fogs will get HID's as well. I'd like to get 55w as well.
My biggest problem has just been finding suitable headlight assemblies to bake apart. It's very hard to tell from a picture on the web how they are sealed. I'm also on a budget. I can get used OEM ballasts for fairly cheap.
I looked at RX330 projectors as well, but they looked a bit big to fit in the OEM projector slot. Not sure, though, just eyeballing it. I got a good deal on the TSX projectors, and I've heard nothing but good about them. I've also seen a couple cars that had them and was impressed. If you have a good place to get quality ballasts and D2S bulbs for cheap, let me know.