I just got done with this but wasn't concerned with looking stock. just wanted good quality stuff that I wouldn't have to mess with. I did it in a way where I could uninstall it in about 15 minutes and simply plug my stock stuff back in.

btw, wire size is not an issue with the existing stock setup. 16g feeds the lights. the real issue is all that resistance because the factory didn't use relays and old wiring. look at newer cars...my 99 grand prix uses 16g for the lights.