I bought mine in September last year but I'm not exactly sure what the build date is.

Most likley you have a GEN III

You can tell easily by if you have the headrest on the back seat. Also the Captin chairs will not have the arm rest and the center console will be a little larger.

There are a few other things but those are the main diffrences.

Otherwise you have a GEN I or II and I'm not sure what the diffrence is between those is.