I has the Lincoln ’flat’ backing plates one year only 41 ) look as Ford 39/40 ) and had the 42/48 before and they get in deeper and they use another drum.
The 39-40 Lincoln had even a more deeper backing plate.
I know if one use a 32/34 spindle it needs as adapter to bearing anx thd Ford V8 store sell a kit.
I has the 39/40 spindles that will work on the Lincoln 41.
I has the old drum/backing plates, but it was hard to find and expensive.
Rear brakes was the same 39/48 on Lincoln.
https://36fordwoodie.weebly.com/lincolnbrakes.html