8-3/4 brake gap/ standoff odd measurement

Screw Moser. I they don’t know the difference between A body and everything else 8 3/4”, the don’t know Mopar. Contact Doctor Diff. He will set you right up.
I emailed him 2 times in the last month no response and phone says on vacation unfortunately. I know things are crazy for manufacturers. They are making them to what I told them so I hope they turn out okay. Usually I’ll go through strange but they talk to you like your a dumb *** or like they just saw their dog get ran over.. frustrating sometimes. I was just curious what a mopar offset is I know there’s two different measurements but never found out what they are