John, he might be asking if there is a later model Chevy bolt on stuff. Similar to what Model A guys do. Where, I think, you can take juice brakes from a 1940's Ferd, just about bolt them on to an early 30's Ferd, plumb them, and be on your way. It's possible even the master assembly bolts in. Old Henry not wanting to do much engineering to save costs. Things like changing spindle bolt patterns, etc.
You know me. I'm of the mind that if you are going to upgrade, why not get the latest and greatest. Everyone one and their mom makes parts for the 9" rear axle. And there is also a bunch of choices for front axle/brake upgrades. How deep down the rabbit hole do you want to go would be the only question you need to ask yourself. Restore or daily driver, etc.
