If any help, there's a GM Canada documented '66 Acadian L79 3-Spd column 2-Dr. Post car up here in Canada that as much as I ever understood has original drivetrain components and equipped w/ a 12-Bolt 3:08 non-posi..
Below is a link to a thread when it was on the CP site..
What axle code is on yours?.
'66 Acadian L79 3-Spd 2-Dr. Post
http://www.activeboard.com/forum.spa...picID=15264884
[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete