Robby,
My dad owned a 27' walk around that we fished offshore many times. I do recall having a specs book on all sea crafts from 1979 and that boat was in it. The boat had twin gas inboards and a small tower. It has been eight or ten years since the boat was sold but if you have any questions I will try to answer them. You can contact me here or my e-mail@
powerpack645@yahoo.com
Bobby