I think the widest you can go with a mini-tub depends on the height of the car in the back. I put the spring boxes in the center of the frame rails. We cut the original tub right down the center and made new inboards only keeping the outboard tub to look factory stock. I have some drag radials that are 13" wide section width and they only work with a rear sway bar. With my car ride height this is the max you can go. Jayson
