So I picked up this old 320v for a couple hundred bucks. All very solid, transom and floor are strong, and old 84 merc runs strong. No real problems at all. I was looking at the drain today and saw this, Pic attached. 4 holes, outside of the obvious bilge drain does anyone else know what I'm looking at? I think one would be a fill/aerate, one a live well overflow, and one a live well drain. But they don't look right to me. That being said, I'm used to the newer models and I'm sure things have changed. Any help would be appreciated.