I found some pics of GM radiators that match like you said. I'll check to see if the core was cut next Wednesday (my truck day smile ).

Supports: That's what was confusing to me... not only was it 1 center bolt, but there was 1 center support.... was hoping someone would say some other year or a GM had a single center...

Don't see why someone would put in the effort to cut off and re-weld a center support. if you"re going to put in that much effort you"d just fix both.

This truck has a story to tell and half the fun is listening to it!