And......of course right after I post, I find the answer. I could not for the life of me remember where I found that photo and now I've found it. BusDaddy answered this exact question for someone else 9 years ago. It's for the preheat system on 1975/76 engines. It would appear the consensus is if you are running FI, then you likely don't need these set up so just cap them off. That's exactly what I'm going to do.
-Curious George