I've got a 2000 with a 2002 conversion and there are some differences. The front end is different, which would be the bumper, headlights, corner lights, and the grille. So, you can't fit anything of that sort from the gen 1. The only thing up front for you would be the black housing headlights/corner lights on Ebay. The major problem with those is that the light output sucks really bad. But, you can buy a HID retrofit kit from krawzyazn here and it's not too bad. If you want a body kit, stick with TRD/Kaminari lip kit. Besides, I don't think anybody makes a fiberglass kit for the gen 1.5 anyways. If you want a different grille, the only option is to go custom. Either make it yourself or there might be someone here who can get someone to make it for you.
Anything else you want will work. I choose to do the conversion because I wanted a dual projector setup and it was the only way to go. If you got the money, my projectors ran me about a grand, not including the lights.
If you have any other questions, just ask away!


Lexus lip kit, LED tails, F-Sport Intake, HKS hi-power exhaust, TEIN S-tech springs