A couple questions and some ideas
1. what is the tubing's function? Is it part of the heater hoses? Is it metal rather than rubber?
2. Windshield Wipers are Trico RB-11 types and were also used on 1949-54 Chevrolet, 1949-53 Oldsmobile, 1950-53 Buick, Cadillac, 1952-54 Ford, Mercury and Nash, 1953-54 Pontiac among other makes. Try your local NAPA jobber. They may not necessarily have them in stock but should be able to get them from their regional warehouse.
3. NAPA should also have the Carburetor rebuild kit. Tneir number is 25056 which is the WCD general kit for all 1952-54 Kaiser carburetors. DO NOT USE RUBBER seals, etc. Use the Neophreme seals because rubber will deeteriorate due to chemical interaction with the 10% alchocol in today's gasoline.
Hope this is helpful