I have a dumb question that has probably been answered a hundred times here but I can't find it for sure. I have a 1992 Automag with a power feed, just trying to confirm if it is a level 5 or level 7 setup. It is stamped with the "A.I.R" label and has the foamie bolt, but I've seen pictures of what is supposed to be a level 5 that looks just like it. Any way to tell for sure by serial number or something else? Thanks