8-3/4 Diff. Gasket. (what application to search?)

I went to the parts store looking to get a gasket so I can put the carrier in my dif. The smart :munky2: guys behind the counter dont use books anymore so after I searched :read2: every application I could think of, I gave up.:angry7:
Now Im on Rockauto.com trying to search by application and for the life of me I cant find an application that had anything bigger than the 8.25.
Anybody help me out here? :@:
Thanks