Ok...I should have said...production typically ends/ended in late June. BUT being the Firebird did not start production until late December 1966...unlike the 67 Camaro which started tooling up in May of 66. The 67 Firebird was a mid year release. I guess I need to use words like usually, typically, generally instead of definitive when commenting. My June reference was a generalization and a reference and in no way has bearing on his question.
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1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.