Hi David
I have an early GPA and my side panels are like the ones in your photo. From your chassis no. one can see that your GPA is early. As far as I know, those panels go with the early GPAs who also have the lifting rings on the chassis/frame and not on the deck.
On the upper railing you should also have the rope guides. The rope guides were fitted on the early GPA only. I am attaching a photo from my GPA.
Also the outer sides of the propellor tunnel should be plain and without ribs.
Also something else about the inner floor where the seats are attached. The brackets where the floor is attached to the hull, are smaller than the late type GPA ones. So the floor of the early type GPA should be slightly longer.
I would appreciate if you can send me some pictures from your GPA as it would also help me with my restoration. My email is
gpa430@onvol.net