Spring Perch Change 1970 to isolated 1971. Can it be changed back?

I'm wondering if the isolator can be deleted without welding on a new spring perch.
My 1971 Fury has a large centering opening for the isolator. Hard to get a pic.
PXL_20221025_214949089.jpg
Opening for isolated spring perch. Pic from 1972 8.75 rear
20190427_192547 1972 Spring Perch.jpg
I think the 1970 and earlier had a much smaller opening at the spring perch
18a9 reassembled, new gasket.jpg
Any thoughts on using a 1971 or later axle without an isolator at the spring perch?
Thanks
Author: 1970FuryConv