New owner of a 1976 Plymouth Duster

All ready has the 8-3/4? Whoo-Hooo!

Well NO, :( After getting right under the car and snapping some pictures I can see bolts holding on a cover. Which in my mind makes it look like an 8 1/4" rear end.

I have found a Dana 60 from a late 70's dodge pickup for 100 bucks. Should I get this or be on the hunt for an 8 3/4?

Riddler