The picture of the 4 wiper motors, the top one is the
CMP/MCP type. This is a Trico unit known as the S Series. There are a variety of models within this series with different spindle lengths and mounting dimensions, but the operation of the mechanism is the same.
My understanding is that Cab 11/12 CMPs did not have the spacer bracket on the Windshield frame and used a short-spindle S 570 wiper. Cab 13 trucks which had the stand-off bracket mounted to the windshield frame (and therefore possibly the 1533 MCP) used either the S 609 or the S 548 with a longer spindle. Each of these came in a LH and RH version