For the record, in past threads I argued quite a lot to open up wheel diamter because the only advantage to going to 13's is the same advantage as changing final drive - which is legal. And yes, the only hope with my MR2 is to have custom gears made at a cost greater than the value of my car.

I understand the intent because I am on this board, but if I wasn't and just purchased a GCR with that wording, I'd be picking up one of those sets of 13x7 panasports on eBay right now!