Rear Crossmember/Spring Slider/Spring Relocater

let me add this a scamp and a dart are diff. from a duster. how do i know i have both...the wheeels off my duster will not fit my dart..even if i mini tub the car.....unless the rear is not right..but a abody rear is the same right???????i put my 28/10.5 slicks on my dart from my duster wheels and all and the tire hit the out side lip..but on my duster i have about 2" to work with...so thats all diff. from what he is doing....you will need more inset of a wheel then what i have ..mike