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Are you talking Wagoneer? Is it spring under the frame? If so, a Chev/Dodge RH drop D44 (or Ford highboy for LH drop) will bolt in. A touch wider than the pickup axle, but 7" of instalift in the front of mine. http://virtualjeep.com I got high steer arms that will clear the leaf springs w/o a spacer from http://www.ottindustries.com and used the stock Jeep tierods with longer centerlink and draglink center tube.
I believe what he is looking for (and me also) is the parts to take the spring plates and put them on the axle tubes, and use square style u-bolts to go under the spring. This is used in a Spring Under Axle set up.