I have front disc brake issue, front spindle mounting bolt hitting sway bar mount on MBM disc brake kit? Need your help

Yes hemi71x said pre 73 used 1/2” bolt not 5/8”
yeah, so which LBJ do you have, and what size are the bolts currently?

the choices are: swap the LBJ to the larger or drill the LBJ to accept the 5/8" bolt or source a shorter/thinner 1/2" bolt.

or ruin a perfectly good set of desireable LCA's and spend a grip of dough on an aftermarket swaybar set up.