Front disc brake conversion on Demon-Now alignment is way off. Needing help!

bruceo2011 said

Kit DBK6272 is for B body and E body cars. Using 73-76 A body big ball joint uca's might solve the problem. Kit DBK6272A is what you need for the '72.

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Uh-oh
If that's true then putting the small-pin 72 BJ into the big-pin 73up knuckle would possibly explain some or all of the camber error, as the pin would not self-center. And that with the taller 73 up spindle could finish it.