Square body front crossmember on 64 C10?

[theastronaut]

Better off using aftermarket spindle/disc kit with 6 lug rotors. You'd be rebuilding the squarebody parts anyway, no need to switch crossmembers then change everything out. You can get spindles that fit your original 63-70 ball joints and tie rod ends.

The 63-72 a-arms cross shafts never really wear out if they have grease in them, and they don't deflect so they'll hold alignment specs better. 73-87 rubber bushing degrade over time, the 63-72s are better to keep imo. The crossmember itself is basically the same, no improvement over the original one.