The correct cast # is 5460346 and the suffix code is WT on the front pad. I have been assured by many that all of these masters had bleeders - although the AIM for 67 shows one without. Some of the MCs may also have had a Julian code stamped by the front brake line.
Don't know the answer to your second question, but on the 67 brake boosters for disc brakes the correct stamp number is 8515 and there was no Delco Moraine stamp on the face of the booster. If your booster has such a stamp then it is not correct for a 67.
