So I spent some time cleaning up under there today and it's worse and better than I thought.
The better is the housing itself is not cracked just gouged up pretty good, but otherwise fine.
The split in the weld to the factory cover that I thought was a inch or two is closer to 5-6 inches. It's a nice hairline crack running the center of the weld across the bottom. It was worse than I thought since I wire brushed it to get the paint etc off so I could work on it and found that it had cracked previously and someone had jb liquid welded it closed to stop the leaking apparently held for 7 years though lol.
So my thoughts are just deadline the truck until I can get the new front end rebuild and sewer capped. So probably december, or drain the diff and clean it out smear it with jb weld on the inside, and outside and reassemble. Pray it holds and doesn't take anymore serious hits in the mean time.
Thoughts?