8 3/4 pad placement

just got an 8 3/4 that came out of a 72 half ton. It appears to me that the pads for the leaf springs are on the wrong side. The pads have the flats on top, and i thought they should be on the bottom. Can you put a case on upside down to the housing?
most p/ups are that way, raises the bed up, as it locates the rear end under the springs, instead of over them..