Well I got lucky, and the rear in my donor truck is not a 10 bolt but a 12 bolt! Thant is the good news.
The bad news is that the 350 that I was going to freshen up that was in the donor truck has two broken rods and a trashed crank-shaft...
Oh well, back to the drawing board...
Garry K

Garry K in Pac Nor West
1948 Chevy PU 235 SM420 4 spd
1932 **** B pu
1964 Datsun 4x4 with SBC, SM465 4spd and Rockwell xfer Dana 44Fr and 12 Bolt Rr.