I have been informed by my colleague, Mathias, that the D-1's did indeed have the siren. So it will have it!
yay!
That's the one with the short wing!
BTW, main reason for deleting it was because it did cost between 10-15kts cruise speed.
Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.