I have read that to use 76 Cordoba spindles I have to change out the steering arm because of the different lower ball joint,if I go to the
73,76,A body arms are they drilled and tapped for the bolts to go through the spindle and thread into the arm like the original Cordoba ones or do I have to go to bolts and nuts to attach them, Thanks Rodger

the cordoba spindles will work with your original arms. just use the bolts needed with whatever arms you are using. the earlier arms use thrubolts with nuts. these will work with the cordoba spindles. just observe any clearance problems with the bolt heads next to the rotors and slightly grind the head thickness if necessary. use grade 8 or better bolts and nuts.