So the production run appears to have gone from September 26th 1968, through late December 1969.
Now, the question is, what would the trim tag state when Firebird production ran over 1 year?
Example: A 69 Firebird coupe tag states 11A, how do you know if that was the 1st week of November 68, or the 1st week of November 69? Would these both have 69-22367 on the tag?
Production continued to 11A (first week of Nov 69).
A Nov 68 car would be LOR or LOS. A Nov 69 car would be NOR. LOR had stopped production on March 15, 69. LOS stopped in May 69.
