1970 short wide bed truck ? what to do?

[gary67]

i bought a 1970 chevy swb with a 292 motor and three on the tree.
motor is locked up body is in great shape has rust on the rockers
and a spot on the front fender.
my question is should i get the 292 working or should i just drop in a 327 or 350 and be done with it. the 292 is the orig motor. which would be the best
for re sale? no power stering or brakes and has 6 lugs the truck was a one owner the orig owner just put in new lifters and didnt finish he got sick and never finished all he needed to do was to put valve cover and reinstall ac comp.