Hi,
The reason I asked is that the tank came with a 1952 plunger B31, but the 1949 to 1953 parts book lists tank 65-8479 (shown below) for B31,2,3 & 4 plunger and B31,2,3 & 4 rigid, after frame ZB31 19001.
I have both so I was wondering which to use.
Thanks...