If 6 lug, you might use a 12 bolt from a 67-70 or 8 lug use a srw 14 bolt. I used a 70's srw in the 46 3/4 ton - 3.73 gear behind the 54 235 with a 4 speed crash box from a 41 1 1/2 ton dump. I believe the 46 3/4 had a 4 speed enclosed on first half and open on second to rear diff. pre 47 3/4 rear drums are hard to come by. The 41 dump 4 speed was open on both halves. Had to move perches and shock mounts on both.
My 46 3/4 ton had 8 lug wheels oem.
I have a 12 bolt ready to go - already set up for a 46 3/4 ton, but is a long drive from Oregon to Cincy. 8-)
Last edited by 42465967; 04/09/2017 9:58 PM.