I saw your text late last night but didn't respond figuring I would today, but saw this first.
I did have 17 X 11 and 17 X 9.5 in stock unaltered wheel wells. 315 35 17 and 275 40 17 Yokohama AO-48's. My car is a '70 so no lump for retractable rear seat belt mechanisms that need to be "massaged" on later cars. The Yokohamas have a very rounded shoulder compared with a lot of other tires so at the ride height I was running and the shorter than stock tires the wheel well lips didn't interfere.
Each car is unique and when figuring out wheel/tire combos a lot of variables come into play. Ride height, suspension, expected payloads, car weight, front/rear weight balance, etc. My car was lower than stock, aftermarket suspension, no payloads to speak of (not even a spare tire), overall weight reduced, and front/rear balance shifted.
Everything is different with the new set up now which is even more of a track only/rarely on street set up which and has not been tested yet. 18 X 10 Rushforth wheels all around, 285 30 and 295 30 Yokohamas, PTFB suspension, more weight reduction, car is lower, wheel well lips modified, adjustable turning radius limiters, and an aero package.
I'll post up some pics tonight when I have more time.
