Interesting. I wonder if it’s just another AIM error. Meaning placed in the wrong section.?.
That's what I believe for the 68. Just stuck in the wrong section.
The reason I believe that is because in all the P&A's I've seen, it only states "68 Camaro Convertible". It says NOTHING about "w/396". In addition, the 69 AIM shows it under UPC PW7/PW8 (sheet A1), so I really don't think the 396 had anything to do with it. As a matter of fact, PW7/PW8 was used on "12300-467" meaning 6 cylinder Coupe or Convertible (12300) and V8 Convertible (467).
As an aside, "12300" was Chevrolet's nomenclature for 6 cylinder Coupe or 6 cylinder Convertible because they were too lazy to state 12337 and 12367.
Ed