LCA and Spindle fitment Help

LCAs all interchange, with the exceptions of the ones equipped with anti-sway bar tabs. With tabs, '72 and earlier are the same; '73 and later are the same. If no tabs, they all interchange.
Bolt pattern changed to LBP in '73 on disc brake cars. '73 and later disc brake calipers were single piston.
Spindles changed with each brake package: 9" drum, 10" drum, and KH discs each used their own spindle design. '73 and up discs and drums each used their own spindle design also (although there was some carryover on 9" drums).
'73 and up used the large ball joint in the upper control arm. Lower remained unchanged.