According to the Bullitt site, they made 6600 +/- `08/`09 Bullitts combined. As for numbering them, the `09's started where the `08's left off. The site is a little conflicted in where the `08's left off and the `09's started, but approximately the first 5800 were `08's and the last 800 were `09's. Check out the Bullitt site for yourself, you can sign on as a guest.
As for the Sirius radio offered in `08 as an option, some Bullitt Heads think the `08's without the Trunk Wart are better looking.