I yanked the 12-bolt w/3.42's out of my 74. It's been dying a slow death & man was it a mess. I'm going to autopsy it later this week or next weekend to see if there are any pinion bearings left....
I got the 'new' 12-bolt w/3.73's I acquired from board-member 'Jonboy' cleaned up, added fresh bearings + seals, & under the truck. Still need to set it back on the ground to finish tightening the leafs & shackles, add differential fluid, & double check all the hardware is tight. I finished up in the dark yesterday & it's been raining all day today.
I should also receive a couple of parts for my 64 project this week so this rear-end swap will be put to work immediately. I'll hopefully be tugging a rolling chassis worth of parts to get powder-coated soooooon.