How many years did we have things like no seat belts, no collapsible steering columns, or seat belts and have now lived to tell about it? But others didn't . . .
The '67 dual master cylinder is an easy thing to do. Same booster was used, at least on my Chryslers. Just need the lines from the cylinder to the brake line dividing fittings.
Personally, I like that air cleaner where it is. That Accel coil might find a better place to be, though.
Points are good, so long as you can get the dwell readings to basically match the point gaps. Points gaps first, dwell readings second. Mopar conversion kit would be my choice, as it's OEM-based rather than otherwise. Upgrade to an OEM-style, later vintage voltage regulator, though.
We drove for jillions of miles with power drum brakes, AFTER we learned to use less initial pressure on the pedal! No problem locking them all up, either! Discs have more fade resistance and aren't so touchy on initial application, but it's that "first stop" that really matters when you need it? Good quality linings make the difference. When you need new tires, you might consider some 15" wheels and modern radials, which can probably help the panic stopping as much as anything.
The late Brock Yates had a '66 (maybe '65) Fury III wagon. 383 4bbl and such. Not sure what possessed him to pick that one, but it became the first of a series of "Boss Wagons" he owned while at "CAR AND DRIVER" magazine, back then.
Several years ago, there was an article in "Collectible Automobile" on a '68 Fury I wagon. It was owned by a NYC paint contractor. A small operation. It was NOT pristine, but had some battle scars, but still survived. Slant Six, three-speed manual. It was his work vehicle and he carried his kid to school in it. His daughter thought it was neat, as did her classmates. Probably even better than a Marsades-Binz.
Keep it and get it going better. Doesn't need to be a 90% correct car to have CLASS!
CBODY67