The only thing that may be a concern is the rear brake hose and rubber hose. The 8.8 will have the brake hose mounted to a diff cover bolt, near the center of the housing. All the 7.5"`s that I have seen have the rubber brake hose attatched to the right axle tube, mounted by the diff vent fitting. On a car with a dual exaust system, the rubber hose gets very close to the tailpipe. Also, depending on the years involvd, the park brake cables may be different. I think the 79-86 cables are all the same, but they changed in 1987, where the cable attatches to the hand brake lever.
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