The Dnepr factory is out of business. What you get now are Urals, made by Izh. Despite the common ancestry and similarity, it appears not much more than the tyres will interchange between them.
There is a higher ratio bevel box, which is still a bit low for solo use, but ok on the road with a sidecar according to our nearest dealer. You can get optional 2wd, with a locking diff and Earles type forks. There's also an optional deeper sump as well, as those old twins tend to run a bit hot. The UK models have a decent modern electrical system, complete with sparks big enough to stun any buffalo that need it, I don't know what you get over there.
If you really wanted to, you could use factory options and dress a solo up like a 1950s French police bike, there's a lot of extras.