Sorry, late to the party. Proper clocking should be checked before installing. Curious as to whether all "Mopar" brand distributor's ace clocked the same. If the off shore built products aren't, I would question their quality. Thanks
Mike...those pics I posted were from 4spdragtop's recent dizzy swap, due to inferior running. Both his dizzy's were, he says, "Mopar" ones, but were different years...one of them out of his truck, I believe. As you can see, the rotor's are lined up, but the "blade" is not. My contention is you can just move the inter. shaft to line up with the "blade" of each dizzy, and the engine will run properly, without having to move any plug wires.
Besides, I was looking at a spare cap I have, and #1 plug wire tower is actually marked "1", so if you go by that, one of those dizzys will have to have the inter shaft clocked to match.