Hi guys

Got a humming noise from the Diff in my 2WD saph when going 50MPH and accelerating (doesn't do it when I lift the throttle) It goes away and comes back at 100MPH again.
Sounds like the ring and pinion are gone. It's hard to find a 7,5" Diff here to swap but I can get my hands on a 7" 3,62 open diff.

Can I swap the ring and pinion from the Open 7" to my 7,5" LSD unit? Is it a "bolt on" job?

Thanks