Bigbear,
Right forum, just not too many people that hang out here, that were familiar with Chinese tractors over 5 years ago. Most, including myself, are only familiar with recent Jinma and other recent Chinese tractors. From my understanding, Rhino tried do what Agracat tried to do, in these last 5 years. They ended up in the same place, bankrupt!
Even on CTOA, there are probably only a few that know the Rhino makes and models, let alone the changes that creep in every year. If the owner posted a picture, and you could identify it as having a Jinma linage, you still couldn't say if a Jinma part would fit it.
There was a couple of places specializing in Rhino parts, a couple of years ago. Best bet is to google search for them, and contact directly.