I could probably tell more from the other side. Big car motors are usually bigger, the lower housing is longer and they are geared different than A bodies. From the pics you gave, I can only say they are 2 speed washer motors. They may be for depressed wipers or not. Some non-depressed look the same.
The motors are identical from the front, and they are 2 speed motors. It appears that the top one with the strait shaft is non depressed park. The bottom one is for depressed park. Trying to find out what A bodies used each of them.
What color is the rubber grommet where the wiring enters the motor? The Assembly manual mentions a gray grommet ID's the A body motor.
I agree...also the number of wires off the motor...I think 3 = non-concealed, because concealed ground through the internal park switch.
