Thanks for the link to your earlier thread about the manifold confusions, John.
I remember seeing that discussion while it was in process, but didn't follow the specifics as I was not involved with those components of my truck yet, and ASSUMED that what was already bolted to my engine was correct and would function as it should. Now, I am a bit more aware.
I guess that finding a set of manifolds that have the proper casting numbers for a 1954 235 should not be too difficult and should prove to be the path of least resistance...even if I have to have a custom exhaust created, as you (John) did.