Probably a Ford ( Newholand ) tractor derived LP engine. I don't know anything about this but the placement of things on the engine reminds me of a ford tractor. Infact with the execption of the engine mounts this looks like all the hoses and parts including fuel lines coolant and power stearing pump in in exactly the right place to drop into my my old Miller minecat ( a 1990 NewHolland 3 cylinder tractor convertion ).
If we could zoom in on that thermostat housing I suspect it says Ford and the LP connection is in name only.
This has been peaking my curiousity since I first saw that picture. I started stripping the minecat for parts a few months ago, lots of usefull parts on it for the Petter engine. One thing that caught me eye that seemed a little odd but I didn't dwell on was thermostat itself said "made in England". Seemed to me at the time we must have replaced the OEM Ford unit with something that was sitting in stock because that kind of part is probably made cheaper in Mexico or something.
Tonight I'll snap some photos of the engine ( or what remains ) in 943 minecat and look for anything that has the LP mark or other indications this engine and trany were made in England.
Doug