1982 Other Chevrolet Models I have no clue

Engine Mechanical problem
1982 Other Chevrolet Models Two Wheel Drive Automatic n/a miles

One of the NCO's in my unit has recently given me a 1982 chevy c-10. Only po\roblem is that it has no engine or transmission. Iv searched everywhere online and cant find the specs for this truck! Could you tell me the engine size, what size engines can fit, and tranny size? I appreciate your time and thank you