Looking at the transom from the rear, try looking at the top right to see if there's any indication of a molded in HIN number. Metalflake would seem to be original gel so should be pretty apparent, unless some repairs have eradicated it. Anything on the title or registration indicating a HID number?
Welcome! And great looking boat! Metalflake is coming back!!!!

Nordie's right, you should be able to OWN the rough lake stuff with that lil thing! Bottom looks a LOT like my Saguaro, but even deeper I think. Good looking project no matter what it is, really.
Ray