I think the rear shock from the next gen ssie also fits? Not sure if any of them came with ohlins fitted? It might broaded your search.
ssie ones do fit and the Ohlins has a ride height adjustment as well, so you can raise the rear and speed up the steering a little bit.
You'll be very lucky to find a used Ohlins... they just don't come up for sale. Your best bet is just to suck up the cost and buy from the USA.