95 Crown Vic rear in mine. Works great. Geometry worked out like a champ.
Housing narrowed to stock G body width. Quick Performance did the work. Added their lower control arm brackets and coil spring perches.
Moser 9" ends with Blazer rear discs.
Spohn adjustable upper control arms (for 68-72 A body).
I made sleeves and used UPR spherical upper control arm bearings to replace the rubber bushings in the housing. This also allowed me to use the OEM 12mm sized bolts the G bodies use. Crown Vics use 14mm.
I made relocation brackets for the lower attachment of the rear shocks out of 3/16" steel angle.
I made an adapter to bolt a passenger car 12 bolt cover so it looks like a GM rear. Fools everyone that looks at it. No one can figure it out.
Love how inexpensive OEM quality parts are for the 8.8.
Ford Racing 3.31 gear set was about $150 shipped to my door.
Ford Cobra 31 spline Traction Lock was about $250 shipped to my door.
Axles were 31 spline with GM bolt pattern from Quick Performance