Wow , Gem under a Tarp ? 85 v20
 

We sure thats a V under there?...not sure what else it could be but that windshield outline doesnt look right under that tarp.

Don't know what it is...but pretty sure it's not a V-20...that's not to say it wouldn't make a good runabout for somebody...

IMO the windshield looks too far back and the wrong shape. Also i dont think that the bow of the boat looks like it would be right either.

didn't they make a runabout that was a smaller version of the nova. the shape and the carpet dosen't sound like a V

Sure don't look like a V to me either, and that engine is an old style cross-flow which would make it 84 or older. The paint on it looks like late 70's or early 80's for that 140.