I can't help you with id on the heater but see some problems with it. First, it is monted too high. You will end up with frozen feet and roasted head
without a fan to circulate air. The flue pipe is pretty small. From what I hear, the diesel
heaters with less than 3" diameter flues have serious problems with back drafts coating the interior
of the boat with soot.
What's the burner look like?? I had a Taylor that used a standard kerosene stove burner. If you know what those look like, you are in luck as they are pretty much universal. The problem is propane
has drastically cut the popularity of kero stoves and the burners are getting hard to find and expensive.