I have to agree on it being a Cobra, but as for the make, who knows. It's obvoiusly larger than the Dumas kit considering it has a vintage gas engine. I see three real choises with that boat:
1) If the engine works, install a modern FM radio and have fun
2) Remove everything and install a modern engine and drive hardware along with the radio.
3) Leave it as it is and see if you can find someone familiar with these old boats and have it's value appraised. Might be best to sit it on a shelf and protect it since it's probably an antique