Slightly OT - 1948 International KB7 truck

Wondering if anyone knows where to source parts on wheel cylinders for a 1948 International KB7 truck? They are Wagner Lockheed FD 6020 & 6021. Thanks!

 

try oldihc.org Should find some posters with the same truck

 

If those are the rear "Hy Torque" style they have been NA for about 30 years,think golden hen's teeth. There was 2 different bore sizes if you have the larger there is some military surplus stuff off half tracks etc. floating around. Place in TN ,Memphis I think had some a few years back or Ebay.

 

Thanks for all the info. Ended up finding someone who had an original set to work with. Yes, they are tough to find.