Option Code Question

[SS Tim]

There are lots of directions this could be. However I really don't think it is a special "package" item, but probably an equipment level notation. IIRC most spare wheels were "Q" and "S" codes. As a point of reference here are the "Z" codes from a US parts manual. Not much help though in that it does not list even the known Canadian RPO codes often seen out of Oshawa. These would include Z49 Canadian Base Equipment, Z45 Max. Protection Anti-Freeze, V78 Delete Certification and U18 Kilo Speedometer. If you look through this list you can see "Z" codes were a real catch all for options. As a note this is from the 5/79 edition of the 46-72 PM so the descriptions tend toward the later square body's than 67-72 specific.