73 disc in a 67 cuda

Yes, Everything except the drag link, Pitman arm, idler arm.
If your 67 has a sway bar that goes around the front of the K you will need to switch the steering knuckles left to right . This moves the calipers to the 1 o'clock position . At the original 11 o'clock position they would hit that sway bar end links.
If the 73 front end has a sway bar through that K member you would need to change the K, and drag link, idler arm, pitman arm, everything in order to use that sway bar.