LBP 10 x 1 3/4 brake drum availability?

Putting a LBP 8.25 rear in a friend's '72 Duster. He got the rear end with no brake drums, so I ordered some 10 inch LBP drums. Now that I have them, they are too wide for the brake shoe setup on this rear end. My shoes measure 1 3/4, and these drums are about 2 3/4 wide.

Everywhere I look now shows the drums for 10 x 2 1/2 rear brakes. Anytime I read anything about a 10 x 1 3/4 rear brakes, it's for the SBP.

Did they make a factory LBP 10 x 1 3/4 rear brake setup?