Everlong...from the pix...she looks like she has been nicely kept up. Instruments are rather dated...but if they work...who cares. Nice outboard.
Conversion to propane is not that difficult...but you need a place to keep the tank as it cannot be stored in a locker down below unless it is a totally sealed space that vents overboard. My guess is you'd need to rig something up on your stern rail.
Links...West Marine: West Advisor
West Marine: West Advisor