Appreciate the reply. And yeah, I got the 09 and beyond, it was more the pre 09 that Z06 added with the table that was of interest. A Premium Plus posted on this page yesterday and was looking for the table to help if date was posted.
Since I posted found a thread that had a P1 date code T, using table it was 2007, U is 2008. Can extrapolate backward skipping the letter I. Not sure if there was any other skip.
Yes, 09 on easy to figure.