SB Cam Thrust Plate P5249637 no longer made? Only tensioner now?

Let me think of the rotation. The oil pump/distributor drive gear pushes it forward as it's driven I believe.
I think you hit it on the head TMM, and I have been through that before and figured it out.... I just have forgotten. The reaction at the oil pump gear pushes the cam one way or the other. (I am also pretty sure the lobes are not flat front-to-back.)