easy LBJ interchange Q

Rapid Robert said
on the 66 dart stock car (73 dart discs) I need to replace the LBJ's & I have some assy's from a 64 dart with 9" drums

you need the LBJ that matches your spindle-- so the 73~76 dart lower (it's also the same as like 62~72 B-body, 70~74 E body)

the 64's won't work in the slightest-- the bolt holes are the wrong diameter and spacing.