Some suspension and brake questions

There still seems to be some incorrect info on the '73 A-body 9" front brakes. Those 9" front hub and drums are unique to early '73. They were finned drums from the factory, have the big upper ball joint, and use the A2 outer and A17 inner bearings.....in fact, they use the same spindle as the '73-6 A-bodies with the 10" drum brakes! The 14" SBP wheels fit all the '60-76 A-body drum brake cars. The 13" SBP wheels do not without grinding or using spacers, as they interfere with the fins on the '73-6 drums. The '60-64 13" wheels (the ones with the wide slots) won't even fit the '65-72 small bolt pattern 10" drum brakes. That's why they made a different 13" wheel in '65 (ones with narrow slots) to work with the new 10" drum brakes available that year. I have seen some aftermarket drums that have more clearance and supposedly would allow the early 13" wheels fit those drums, but, I wouldn't count on it.