I do have cleats recessed at the transom. I will post pics hopefully this evening. Its not much to look at right now. Bare hull and a lot of parts in my storage shed. I was thinking of CG with the jackplate, that's why I am moving the battery to a hatch in the front of the console to compensate. My old man had a similar boat back when I was a kid and I always loved it. I am looking forward to getting her on the water. As I said before my floor and transom are solid (I can jump on the cavitation plate and the transom doesn't flex or move), but I have cracks in the old gelcoat about an inch from the top. I think it is a filler material that has shrunk over time? Does this sound right?
Welcome to Aquasport.com looking at your pics I would say it is about the same year as my 170/1977.