I wouldn't use that lincoln rear if possible, they use an odd ball ring gear (its like 9.75, plus its only 28spline). The disc brake setup almost entirely bolts on to a truck axle (i'm am doing a rear disc conversion on my 82 flareside, well eventially, as i have all the parts), then use a rotor off the front of a 87-96 4wd as you only have to space out the caliper bracket with a washer or 2.