Ok, so I got a picture of my firewall, highlighting the hole. I heard back from Bill Buttermore, and he actually replaced the entire plastic shielding while he had his engine out. For me that is not an option so I wanted to get some suggestions.
From what I understand, it is not a high pressure fitting, so here is what I am thinking i could replace the broken nipple with a piece of threaded PVC pipe stuck in the hole, and fixed with epoxy or some high heat putty. Once dried, I will put the hose back on and secure with a hose clamp.
Thoughts? Better suggestions?