1973 Disc Brake conversion / SBP / 14" narrow steel wheels

arrow360 said
Scarebird has a kit for a 1972. I wonder if I should convert the to 1972 spindles and lower ball joints. I believe the a-arms are the same.

I'd be checking both spindles for part numbers and upper ball joint size.
If you have original 9" front drums on your 73 you have left over 72 parts.