I'm poking him?
I posted the factory TSB with all the information the OP needed in post #7. It's literally all there, and it's factually accurate. That's not my opinion, it's literally documentation directly from the factory after production was changed explaining what parts came on these cars.
And then he comes out after that and says all the '74+ A-bodies with drums were 5x4.5" with small ball joints. That's "what he's seen" buying and parting all those cars, implying he must be correct because he's seen it.
And then I'm the bad guy because I can't say he's wrong about "what he's seen"? You can't "see" parts that were never made. He was wrong, I said he was wrong and provided all the information to prove it. And then after that he launches into his usual tirade and name calling in post #16. Seriously, read post #16 and say he wasn't being completely insulting and condescending, after the facts were already out there.
Facts are facts. Why am I supposed to "Let the people decide who is right and wrong" as he said when we're talking about parts? A physical thing that exists with certain specifications. That's not something you have an opinion on- that's a part you put on your car and fits or it doesn't.
