This might not be relevant to you, but I successfully swapped an '85 c30 crossmember on to my '63 c10 frame, and I only had two holes that didn't line up. Squarebody (73-91) c30 crossmembers should work for you unless you are trying to stay original.


Liquidated my projects
Now looking for a decent '47-'55.1 3100, 3600, or 3800