I did a bit more cleaning and investigating today. I still haven't found a tag with the serial number on it. It may have been removed during some repair. I'm not even sure where it would have been. I will probably have to apply for a nuw Hull ID number but with a good bill of sale that should not be too much of an issue. I found some old mouse eaten life jackets in the ski locker under the floor as well as an old bumper. I removed those items and vacuumed the hull extensively. I then inspected where I could and took pictures. It sure seems that the hull is in great shape.
Open Bow Area
In the Nose of the Boat under Gas Tank
Rear Area by Transom With Bilge Pump
Bilge
Bow Area with All Wood Removed
Gas Tank Area (Still Gas in Tank, Bummer)
Open Bow
Cool Original Back Nav Light
1968 GT-160 Capacity Plate
Area Under Driver's Floor with Bumper