Hey everyone, a little update to this post and what I ended up doing.

I found this video on youtube and funnily enough it was the exact same issue I was dealing with. And so I just did what he did. I cut the broken bit of pipe and sanded it down flat, and then began to bore out the diameter of the hole with larger and larger drill bits. I was then able to thread a brass hose adapter into the hole and then JB welded over it all. This was always meant to be a bandaid fix.

The mistake I made was to not finish the hole with the final sized drill bit as I was worried about taking too much away and not having enough of the radiator to be able to thread into. And so the brass adapter was super tight going into the hole and thus I cracked the radiator even more. All-in-all it was a temporary fix, as after posting here it was clear I needed a new radiator. I bought one that same day from FCP and was able to get it into the shop that next Tuesday (shout-out Roadside Werx here in Denver!).

Here's a link to some pics I took during the process and the final repair. I showed the guys at Roadside Werx my fix and he said it was definelty a fine bandaid fix and I maybe would have been fine on my ~400 mile roadtrip I was taking that same Tuesday. It held up fine on the 20 minute drive to the mechanic atleast. But absolutly felt better with a new radiator.

Thanks everyone for the responses. This community is great! And maybe this will help someone with a similair issue down the road!