here are the 7.5 in backspace 15x10 in centerline wheels with springs moved in and minitubbed for you small block. tried to get you some decent pictures but the lighting is not the greatest in the shop. as you might tell by the pictures. hope this will give you some ideas. i did cut the lip out of the wheel well. did this before measuring for the wheels. would have been close with it. but these tires are 29.5 inches tall and 12 inches wide