After you asked and I went to the shop and looked I felt it was kind of self explanatory. Your description confirms it is a closed drive shaft. Added a few pics. I also discovered some numbers on the driver side of the rear end housing. They appear to be vertical by the attachment screw head castings and I believe them to be either A 8 or 4 8. I lean toward the 48 because I really worked to expose them and just cant convince myself it is an A.
Last edited by DadsFirstPickup; 09/30/202212:06 PM.
Brendan 1940 Chevrolet 1/2-Ton Pickup Restoring Dad's old truck In the Gallery Forum