You can go back to the dealer. They're fitting L-Tuned IS300 kits on your car. It's all warrantied, all nice, etc. Dunno about the cost, but it comes with some nice rims, better foglights, and a clean kit. You can also get TRD stuff from Japan, or damn, just anything from Japan. Look up your car under "Toyota Altezza" or "SXE10." $2500 can get you some very nice stuff.
they have everything on there. Post that question there, im sure you will get a lot more answers. Actually.. id advise doin a search first if they have that function... im sure that topic has come up numerous times. aiite pz
all I have to say is you're a lucky bastard! Next to most Infiniti's, I definetly want an IS300...they're just soooo beautiful...without a bodykit. So take your time with that car, you are embarking on a really nice relationship with it.
p.s. A G35 would destroy that thing off the line!!!