wll an 80s truck 4 spd tranny fit an a body?

i snagged an 84 or 85 dodge 2wd with a 318 4 spd for the engine for my 78 dodge macho power wagon and was wondering will the 4spd fit in the duster or demon? the shifter mounts in or around the middle of the tailshaft any help and any tips or tricks or values of certain cars would be helpful as i am new and hunting for my first muscle mopar