I'm in the same boat (no pun intended) I have an 85 21' Dana and can find virtually no information about the manufacturer. Hot boat did a review of a model I believe they called the arrow, so you could look in the test archives for that information. From my observations... they didn't exactly build the highest quality boat. I had to refloor mine and am now finding some problems with the transom. The boat is borderline unsafe at any speed over 40 until I get a diverter on it due to nasty bow steer. I don't know if it was just poor rigging on my particular boat, but even if they were still in business I would definitely not look at buying a newer model. From what I remeber about the comentary of Hot Boat's test, the gist was that Dana was trying to produce custom boats that the entry level buyer could attain. Nice gesture, too bad they didn't get it right.
Chris