I ran them on a 8" wheel with a 5.5" back space. The springs were moved in 3/4" with the MP kit and the rear was moved back 1/2". I made a spacer and sandwiched it between the front spring hanger and the chassis mount. The wheel well lip was also trimmed on the outside. The tires had about 1/4" clearence on the inside and outside and about 3/8" to 1/2" on the front.