Thanks, yes the frame will clean up OK. I will take it to the sandblaster.
Another thing I discovered, somebody has welded the rail and it looks like a pretty good strong welding job. This repair was done many years ago, in the 1950s or earlier. The repair hasn't broken so I will clean it up and leave it.
1940 Canadian Chevrolet Series 13 (1/2-t) utility (Australian) Lots of history here! Read ot all in the DITY