76 Stinger 75 questions

[bhabben]

Folks,
I have a chance to pick up a 1976 Stinger 75 fishing motor from one of my neighbors and have some questions. This is the first time for me for messing with these OMC triples.
1.) What's the going market price for one these days? It's complete, 20" TnT, but has not been run for years, so will need a pile of parts to get it up again.
2.) What year and hp spread 15" mids will work to convert from 20" to 15" transom? This is not for a racing boat, but don't want to choke down from the orig 75hp.
Any other advice or comments is appreciated.
Thanks,
Brett

[10.5' Tunnel]

I know that these things are pretty rare.They also will cost a lot more then a regular "fishing" 75. If you have found a great deal, buy it.But if your just looking for a dependable motor for a relatively cheap amount, I would just go with a fishing motor.