I working on a list of parts that'll work in that rig. Stuff you can buy at NAPA or Carquest (only shops near me).
If you play around on NAPA's website before you go it's easier if you have part #'s in hand. It's mostly computerized and the young workers cannot cope without a VIN #, year, make and model at times.
I know NAPA carries a whole rebuild set for the L6 engine and a lot of other stuff including master cylinders, fuel pumps, etc.
I also have several links to parts supplies for this truck.
CC
1947 1/2 Ton WC 2WD Dodge