2009 at the Hammond Barn

[Grant Bowker]

Originally Posted by RHClarke

I got a request for photos of the HUP (44 or older) bumper mounting brackets. ...... I am not sure if the weld was a post war mod or not.

I suspect that the weld is a modification rather than a production line effort. Off the top of my ever more hairless head, I can't think of any factory welded joints on a Chev frame.
There are some odd mixtures of bolts and rivets too, some of them can be explained by assembly order and access, others look like either a rivet failed and was replaced by a bolt or someone either had to remove a part that had been riveted and used bolts to reassemble or sometimes another part was added that used an original rivet hole, drilled out and replaced by a bolt.