Remember the limits of drum brakes and brake fading. If you have to stop fast at 70 MPH and tromp the brakes hard and steady, they will heat and the braking will fade away to nothing. Notta. Zip.
This happened to me in Wyoming with a big buck deer standing in the middle of I-80 at night many years ago.
If you pump the brakes to lessen the heating, it will still take to a good distance to stop.
Some younger folks who have only had disk brakes haven't felt the pit in the stomach when the brakes go away.
Nice truck!
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.