What I know is what I see in the above pic. I agree with what You've got there spec-wise, but what I see is a piss-load more than 5/16" of exposed shoe, and the angle
is actually hiding more unseen. Me-thinks there is something like 2.5" backing plates on there...........If it was simply a matter of axle offset, there would be almost no
shoe visible because the "extra" surface beyond the inner lining edges would cover most of that 5/16"