8 1/4 rear and jeep brakes!

I thought 8.25 and 8.75 (and Dana) all used the same backing plates.

I think you are showing us which hole needs to be enlarged, but I'm not seeing it.

I thought the same thing when I ordered a kit. Totally different. This might help.
http://www.crankshaftcoalition.com/wiki/File:Rear_end_axle_flange_id.jpg