http://www7a.biglobe.ne.jp/~phantasy/ssf/index.html

There's:

Ver0.07 beta R8
Ver0.07 beta R8'

I assume the latter is a bugfix or something as it has a newer file date.

Still not able to get Saturn Virtua Racing to start though (controller not recognised in rolling demo), anyone anywhere know why this should be so specifically hard to emulate?