Meter actuator part number RX, PX

[gag4o]

Ok guys. It is all great info for me.
I asked the Cummins customer service what is the warranty on the new part and they told me there are new part numbers that super seed the older ones
5693751
5693752
also these new numbers are new units while the rebuild is the PX number only

And last question. When facing the actuators while installed on the engine, which one is which?
Starting from left to right (front end to rear end) ?