weakest part on the 8 3/4 is the ring gear...sooner or later ....zing...it goes....and if you were in low gear....bingo..you will need to remove the 727 and check the over running clutch..,,
I twisted two 8 3/4 housing with 360 powered Dart/Duster...bought Dana S60 from doctor diff.....no problems..no worries....
