First of all I'm not a surveyor so take this advice for what it's worth. One thing I can tell you is that it is not a Cherb design. They stopped in 83.
But if you look at the boat right now, damage to the canvas, dirty interior and a Heater in the engine compartment? Sounds like it was not cared for to well. I would be concerned about blistering on the hull along with voids on the deck and chain plate leaks. Also I would be very cautious of the steering quadrant and cable.
I will agree with SD about looking elsewhere but this is also sight unseen.
2007 Hunter 49