btw, do you already own the joystick...
I've never heard a good thing about them... I don't know if they are the same ones I looked at, but they seemed to be built to go into crain arm machines, not arcade games... But that one didn't have the range of motion to make the restrictor plates actually touch.
but if the base is the same as any of the happs main 8ways it will work. The restrictors work with supers (and 360s), competition and ultimates (why did ultimates get that name??).... but if they aren't on the same base... you will be taking a chance