I'm in the process of restoring an air cleaner for a '68 400. From searching through all of the threads and reviewing photos of "concours" cars I find the air cleaner service decal (white letting on clear, noting 6424827 p/n) but I have not been able to find info for the correct location for that decal though it appears it may go around the 12 0'clock position just about in line with the upper radiator hose. Does anyone have information on where that decal would have originally been placed? Also, on a few cleaners there was a "Keep your GM car all GM" decal along with the service instruction decal. Were both decals as original and if so, any info on the location for the "Keep your GM car all GM" decal?