You ask two questions.
First, the RIVCO center stand - yes, the configuration of the earlier bikes is slightly different. So the RIVCO stands, which were out of production by then (so the last year listed) had different size bolts and so on. It is not plug and play on the later bikes, though if one is willing to drill out a hole on the left side, it can be made to fit. Of course, the first challenge is to actually find one.
Second, several of us have the Becker lift. Yes, this is a casualty - one of many - of products not sold here because of onerous US product litigation environment. It is possible to get one if you're prepared to pay the substantial freight to get it here, and ask very nicely of one of our European captains to obtain, and transship the lift. Mine came part from England and part from Spain.