Transmission identification help?

[Scruffy49]

1987 C60 with a governed 2bbl Zenith equipped 350. 4spd manual with pto and tailshaft parking drum.
Cab is junk, would like to repurpose the engine/transmission in a different truck. Already going to swap the Custom Deluxe manual door guts/panels onto my 85 C10, tired of pw/pl failures.
Getting ready to drag home a C30 with a grenaded 6.2/Th400 combo. C60 is here and fubar so…
Thanks for any help.

 

[Scruffy49]

F’n possums…

 

[nvrenuf]

The transmission is most likely an sm465 but there no good pics of the transmission itself, just the parts on it (PTO, ebrake, etc).

 

[bucket]

It does look to to be a 464. Iirc, most of the medium duty trucks with a 465 used a larger input shaft and needs a matching clutch disc.