HD-11 Down the Road

I've driven by a dozer sitting back in a pasture for years and always wondered what it was. It kind of looked like an AC. I finally remembered to bring binoculars and sure enough, I could pick out the "11" on the side of the machine and the early Fiat-Allis logo above it. It looks a lot like this machine from another post I found on here when I was researching: http://allischalmers.com/forum/uploads/17858/20171114_161611.jpg The grille is identical. I could not see a "B" and I thought there was small script "HD" in front of the 11 but the paint is bad enough that it's hard to tell. Either way, from what I can tell this would probably date the machine to the early '70s?

The way it's sitting in the pasture I assume something bad happened to it. If I can figure out who the owner of the pasture is, would scrap price/ton x 15 tons be a high-end offer for it? From what I have gathered looking around on here, parts availability is a big issue.

I could end up in a situation where the property owners say "sure, take it" and then some guy who rented the property 15 years ago and left the dozer there when it died notices it's gone and comes after me just because he can.

I guess I'll start with a letter to the property owners and go from there. Like you said John, maybe I'll at least be able to get a look at it and take some pictures.

It's a 1957 HD-11B and looked to have orange paint under the yellow. There's a winch on the back. The track tensioners look like they've been welded up at some point and the threads looked rough, but the undercarriage otherwise looks passable for a machine not working every day for a living.

My main concern is the engine, obviously. All of the engine kits I can find are for later serial numbers after 6427 (1961 or so?) with the 10000/11000 engine, not the original configuration Buda "HD-516" which this tractor presumably has. (Example of Reliance kit specified for later HD-11 engines here: http://reliancepowerparts.com/Product?productGuid=RP915157&partListId=3340)

Am I out of luck on new engine parts for this early version of the 516? Will any 10000/11000 kit internals be backwards compatible with this engine? Forgive my ignorance as I don't know much about the bigger AC engines.