As a Retired Auto Tech from the 80's thru mid 00's, I'm finding so much of this fascinating!! Very early Mopars has separate Brake Rotor and Hub? Wonder why they dropped that feature until the late 80's?? Also, *Cone Locks* on the 8 3/4" Rearend? Didn't see much of that, except in High-Performance Auburn Diffs. I've been learning that Chrysler was quite innovative in the early days!
