Pedal rod to Z bar question.

interesting, I don't have an answer, but I agree the stack up of the pressure plate to the fingers to the throw out bearing depth seems to be different among clutch component suppliers. I changed out the clutch and pressure plate and throw out bearing on my 83 D150 / a833, and I believe the clutch engage point is much closer to the floor than it was previously, unfortunately I did not measure - compare the old and the new and the new one is installed.
Please post back what you find.