I have one. Love it. When I got my 58 Flying Cloud there was a big, empty rectangle by the door where the old, residential wall heater used to be. The sheet metal ventstack was still there and the roof cap. I replaced the whole panel near the door and then ran the new vent up, then "s"d through the panel and up and out. Changed the roof cap to the Dickinson stainless steel because the vent stack is dual walled (combustion air comes down the outer, flue in center). Needed to buy an extension vent pipe to get enough length.
Doesn't have a thermostat... manual, but it does have a 12v
fan to circulate air. That need not be turned on, but it's more efficient. Also, manual lighting, but easy with a match or "clicker". Once lit, the flame stays on through high-to-low settings. Mine has a glass door, not the grate shown in the photo.
Since propane was already there (but capped off) hooking up gas was easy. Hooking up 12v
also easy since it the wiring for the fridge was right there.
I get LOTS of compliments on it at rallies.