Quote:

I totally agree with you RodStRace
Don't start tearing into it until you have a plan and know what you want AND document all changes

Although in his first post he mentions a 741 rear
I thought 741's only came in a-bodies and had a small bolt pattern
Maybe its a typo and a 742 rear



I bet the 741 was swapped in for a broken sure grip or to replace a peg leg.

The tech archive write up on Mopar diffs
http://www.moparts.org/Tech/Archive/axle/1.html

Ryan "Bigs" '73 Duster (BLKDUST) - Black, 100% factory sheet metal, flat hood, 346 cid, J Heads, and a bench seat. http://s268.photobucket.com/albums/jj1/bigsbigelow/ Best to date: 12.40 @ 109 mph