Exhaust vs power-steering

I have the centerforce pressure plate too but I mean the disk. Has to fit the splines of the R154 input shaft. I'm wondering that there is only vendor on the market who makes them with 10.5" OD
> I'll check. I think it was "Kennedy Engineering", Palmdale Ca. "Center Force" is just a generic 10.5", with no "eccentric" weights, but doest have centrifugal weights on fingers. R154 is going in Jensen Healey, with headers unknown ,at this point. ateam:-|