Yes, it was used in pylon racing. It's 30 years old (1981). All new in box engines have value, whatever the market will pay. You can try listing it for $175 and see what bites you get, or auction it and highest bidder takes it.
http://www.osengines.com/engines/eng...continued.html
http://www.osengines.com/history/ostimeline08.html