My Neighbour's boat!

[thealife]

So I was out on my Mako earlier this week with my parents that were visiting us for a week and I decided to take them around the canals in my neighbourhood,
to my surprise I saw this sitting there all neglected,
I decided to leave him the card below with a nice bottle of wine, I hope it helps
Can someone tell me what year this may be it has an outboard but it also has the vents on the side, are the vents not originally for an inboard engine? or where they just on there for design purposes or to vent the bilge?
What price range should I be looking at for what is basically just a hull with no trailer, the engine looks fubar!