Believe it or not its a 15x8 Draglight with 4.5 in backspacing. I know this cause it was the incorrect backspacing when I had them on my Lt1 Z28. When I put the tires on could couldn't fit 2 quarters between them and the lip of the fender. Simple grinder took care of the lip and now got about 1/2 - 3/4 inches of clearance and no rubbing even with 4 people in the car
oh and btw its right now it has a 7.5 rear with 4 on 4.5 BBP, didn't realize i NEEDED to post that info hahaha just messin :p