In case anyone does have a late design 69 deck lid available for sale I thought I would add this information from the CRG site concerning the late design assembly line deck lid changes. "The final version for 69 incorporated minor changes, namely removal of the tabs on the rear edge of the trunk lid and a change in the date code location." There is an excellent picture below in the CRG link.
Also from the CRG "This trunk lid appears to be used from approximately March of 69 until the end of production"
Thank you!
http://camaros.org/images/pages/ext/trunklid69_3.jpg