Guess you guys weren't into cars very much back then. Drum brakes were standard on most cars until 1972. You had to buy a package to get disc before then. Just like electronic ignition was not standard until mid 72. Like I said in an earlier post, it is very easy to find answers today with computers. Or read books like we did for the last 50 years. Motors Manuals, Mitchells, etc..
I have been in the automotive business since the late 60's. Seen a lot happen in that time. Like I said before the good old days weren't as good as people think they were. You had to know how to work on cars back then and not just for fun. They required a lot of maintenance. They all used oil, designed that way. Needed lots of lubrications. Getting an oil change and lube job use to mean something different than todays oil change.
Oils, lubes, fuels, gaskets, seals, etc... were nowhere near as good as todays stuff.
Modern guys are spoiled.