danhr is exactly right. He chimed before I could, There aren't to many bolt on applications for a smaller wheel. The c6 z06 18" will bolt right up no problems. If you want a 16" or 17" its SJM/Bogart. I just ordered the SJM wheels from Steve who was fantastic to work with. Usually its a month to get the built but I told him that the drag racing for us ends in May and starts again in the fall and he'll have them shipped out by the end of next week. So only two weeks from start to finish. And you already know that they aren't cheap. Im at $1419.00 so far without shipping. But WTF, nothing else is cheap on the car. Gotta pay to play.