I tried the old style "Gyrator" made for automatics in my 806 before I souped it up with the 50 cycle belt and pulley kit. It was a three star mess. The faster agitation did not go well with those high fins and, instead of promoting great turnover, it just tangled stuff into a rope. The old Highlander models with the narrow post Gyrators agitated at a slower speed and, while the turnover was not great, it did not make the mess that the Gyrator did operating at a higher speed.
If you put a Power Fin in one of these machines, even with the old transmission you will get better action and super great agitation if you put a 50 cycle pullet kit in the old machine.