If Jim is still in Pearblossom he's real modest. I drove through there in 2007, looked hard, and couldn't find any local information about/by him.
Also Sactotractors - the sister and brother in Sacramento who imported from VN, then more recently were bringing A- Yanmars straight from Japan and doing minor cosmetic cleanup here, closed down about 2009. Their website must have not been renewed, now it just forwards to a spam site.
Now there aren't any Yanmar importers in California/Nevada so far as I know.