I have a muncie 4 speed and have no idea what it is out of or its original application. Here are some numbers if anyone wants to lend a hand.
Maincase 3831704
Gear box cover 3831707
tailshaft 3831731
there is no "p" code or anything that i am used to. On the driver side there is a B236226 these numbers are located where the "p" code on the passenger side is except they are on the driver side. I tried to explain this so it was understandable. thanks a lot

3831704 1963 Only small 6207NR Front Bearing , 7/8" Bore

3831731 1963 "Thin Fin Tail" Driver speedo 27 spline

3831707 1963-1965 Early side cover stud type shift shafts