Okay, let me know how it goes.
Good to know on the drums. I looked online for a brake drum specification, most are listed as an 11" drum. This
REAR BRAKE DRUM from Chevs of the 40's calls out a maximum diameter of 281.7 mm or 11.090 inches. If you still need me to pull a drum and measure it, let me know. I should have some time Saturday afternoon.
I also want to point out the difference in brake drums for the 1947-50 (Huck) and 1951-55 (Bendix). They are not interchangeable as shown below.
1941-1950 Brake Drums1951-1970 Brake Drums