Hot Rods 47 Ford pickup rear drums

I need to replace the rear drums on a 47 pickup open drive rear axle. Are they the same as p***enger car drums or truck only?

Anybody sell decent repro drums?

 

Check with Van Pelts,C&G early Ford or Macs.

 

The photos on those sites don't look like what's on my axle. Mine looks like the axle flange is on the outside of the drum and the drum itself has big indentations around the edge of the flange.