I believe that's the one. I know the '88 is tougher since it was a year of halves, but I believe the 6 bolt is the key. I had a mechanic swap the diff into my existing front carrier. Kevin C and Vic Lee know much more about this. Quote from archives..
"It will have both the door jam and differential cover Lsd warning stickers (one for type of diff fluid to use, and one wheel jacking warning for safety).

Where the cv axle bolts to the axle flange, the flange will have 6 bolts, ( not 4 ) and the axle diameter where it plugs into the differential carrier will be approximately 1.35ö and have a 28 tooth spline ( not 1.073ö with a 25 tooth spline )."
Hope this helps and good luck.
Jim