Wrong size steering armsfor modified '65 Barracuda

The lower ball joint is integral with the steering arm and that tapered shaft is the same size for all A-bodies (62-76) since the LCA's interchange. But, the ball joints vary. I recall in early A's the 9 & 10" drums are the same PN, but K-H disks are different (check rockauto). The thru bolts are in the same location but the holes are larger for disks. If your new ball joints have holes too small for the bolts, then your surely got drum ones. BTW, 1 hole is actually threaded in the 10" drum spindles so don't pound it out thinking it is rusted in like yours truly gomer did.