Certainly, I could have confirmed that the fenders were the same, as was being assumed. The point was to promote a little self sufficiency. If you can own a catalog and look these things up yourself, why would you want to post a question and wait for some potentially unreliable, anecdotal, information. I can't understand why every member of the forum would not have catalogs to cover whatever it is they are working on.
Perhaps I was a little blunt, and for that, I apologize.
Some catalog buying tips:
Get one that covers your truck and a few years newer, to get maximum interchange info. A.D truck owners should have a late 50s version.
Parts are sometimes superseded, so the part shown for replacement is not ALWAYS exactly like the one installed on the assembly line. If you are doing a super-duper, nut and bolt, restoration, keep this in mind.
Most original catalogs have a great Supplemental Data section in the back. This is often omitted from reprints. So get an original, if you can.
Catalogs are on eBay at prices that range from very fair to ridiculously high. Be patient.
Mike