It's a '70s hull.
It could be a 196 i/o. I wish I had a better look at the casting deck hatches. I don't think it is a 222 from what I can see space-wise.
Anyone else have any ideas? Could be a 222 but you need to get a tape measure on it. Either model has the hard part, enclosing the transom, done for you - just just have to fill the i/o hole.
Here is a 222 - see the hatch difference in the casting deck.