dana300

I have a full set of Dana 300 Teraflex 4:1 gears for sale. Ive gone through an looked over every gear indiviually and found almost no issues. The input gear has three teeth with very minimal chipping. The shift for has some detent ball damage as can be seen in the photos as well from removing it...

Just wanted to see if anyone with better D300 experience than I can explain to me why this D300 housing has a bolt that doesn’t line up with either tail housing I have laying around. Thoughts? I attached a photo of my case vs one i found for sale on ebay.