I thank after mini tub and spring relocation I could have put a 15x12 with 7.1/2 back spacing with no troubles . All cars are slightly deferent tho so puts the rear under the car and do lots of measuring before pulling the trigger
This is what I am hoping. I believe I might be able to fit what you just stated, but it's the tire I am worried about because if the backspace is 7.5 that subtracted from the 13.20 tire leaves 5.7. This 5.7 is what will be from the drum face to the wheel well lip. With a A body rear the distance from the drum face to the start of the lip I believe is 5 inches? Correct me if I am wrong because mine with a B body rear is 4 inches. So if I am correct this means with a A body rear that the tire will be .7 further past the start of the lip. You could roll the lip and work, but you would not be able to lower the back much at all. So it would be best to possibly shorten the rear 1 inch on each side making the rear 50 inches. This would make the clearance from the drum face to the wheel well lip 6 inches and rolling it would give almost 1/2 inch. At this point is when I am worried if I will be too close to the frame or springs after the mini tub because I would be an inch closer to the frame at 50 inches overall instead of the 52 stock length.
