These parts are for what could be called a "Gen 1 MD4-2D". The original 2D was built with 091 1st-4th gears. The pinion shaft from an 091 was cut off, and then welded to the 10" R&P. The modern 2D is a "Gen 2" of this one, where they now have a wider 2nd/3rd gear, and larger input shaft to mainshaft coupling.
None of these will work for a common 2D trans, nor an E-box.
The R&P is very much specific to that "GEN 1 2D" trans with 091 gears. There are still a few of these out there running around. The right buyer will need to see this ad, then it will be sold.
The 1st/2nd gears pictured would work in a standard 091 trans. These are not Weddle gears, although they were made by Albins for our competitor at the time.