I found the previous owner got the rover running by slapping on a carb from a 70's Fiat. Its now in the scrap pile.
The beast now moves quite well under its own power. Stopping is an entirely different undertaking, as it has no brakes. Actually, there are no brake parts. They've all been stripped. Parts should all be here this week. Shout out to Peter from 3 Brothers Rovers who has been a real great source of reasonably priced parts and information.