Dude I dunno, I just went to Edgeracing.com and entered my car make and model.

They got good rims and prices but they're a little dumb. They sent me rims with the wrong size lugs. When I told them they apologized and sent me the same lugs over night. then they apologized about that and sent me the right size (2.5 I believe) but the wrong lugs. Long story short I bought lugs from a local dealer.

As for the actual offset, have you done a search yet? i think someone asked that a lil back. If not i'm sure someone here knows.