You're right about the time period. That Spirit line was the precursor to the Genesis Silver grills that came later though so it used the same shallow five flavorizer bars cook box.Steve: I think that is a Genesis 1000 era cook box.
But, still, I would look for a donor grill rather than try to cobble that one together.
You shouldn't have any problems finding a cheap Silver B that you can use for parts.Great. My firebox has multiple issues. I think this patch will work but there is nothing I can do for the other issues. I had discounted anything that didn’t look like mine so I go look again..
Eddie