Narrowed 8.75 rear question

Yes mine is a 48 inch Dana. 8.75 uses the same axle length if 30 or 35 spline. I got mine from Doctor Diff. He figured my axle length from my housing width. If u. It your axles he will be happy to figure the axles for you. Give Cass a call. He is very good at what he does. Kim. Calling Cass. @DoctorDiff