i just installed TYC's on mine... easiest is take the front bumper off, you will need the room to work... for bulbs it all depends how much you wanna spend.. some are $20 some are $50.. wiring harness is gonna fit, unless previous owner cut the harness and installed another set of lights, that's what happened with mine.

 

just installed my angle eyes today on my 93 si coupe. look amazing! you should definately take off the bumper. i havent wired up the angle eyes yet but hope to get around to it sunday maybe. the projectors are friging bright though and the high beams are great as well. ive herd some horror stories about projectors off ebay but i guess i got lucky and bought some good ones. not sure what brand they are but they have a black housing and i bought them from a ebay store called atomic street. anyways last night i put an extra seal around the entire edge with cilecone just because ive herd these sometimes fog up due to poor factory seals. anyways im really happy with mine, just need to tweak there positioning slightly and wire up the angle eyes. picked up 10 m of electrical cord and a luminated switch at my work home depot for like 12 bucks.

anyways i would definately recomend atomic street for aftermarket angle eyes. im really happy with mine.