That is such an old machine that I will be surprised if you if find anything.
As we are all users of Droidbox here, other than our ability to google the same thing as you, I doubt we will be able to help much, though someone may find something (googling returned matches to your search criteria, but as you say, how many are working is another thing).
Seriously, you should consider updating your box if you want to run Kodi successfully. Check the Droidbox range.