Here are some nice 17's from Germany. 18's look nice, but smaller wheels are better for performance. It just depends on what angle you are shooting for. Have fun with your car!
eBay Motors: Keskin KT1 17x8.5J Wheel 4x100 4x108 5x100 5x112 5x120 (item 310026997335 end time Mar-04-08 13:18:29 PST)