HAHAHAHAHAHA!!! Your kidding right? I payed 1 grand for my Falcon Fairmont lol
$15 grand can get you get you a used BA Falcon XR6 or possibly XR8 (XR6 turbo's demand a premium because they are so popular)
the BA Falcon comes with either a 5 speed Auto (with sequential Sports shift) or a 6 speed Manual if my memory serves me right.
BA XR8
-- OLD IMAGE REMOVED (imageshack) --
You could also try the earlier mode,l the AU (look for a AUII or AUIII, Stay away from the First AU's)
$15 grand will easily net you a AUII or AUIII XR8 (possibly modified)
As far as i can remember AU's come in a 4 speed Auto (No sport shift) or 5 speed Manual.
AU XR8
-- OLD IMAGE REMOVED (imageshack) --
Let me just say that due to the fact these are large sedans, Manual gearboxes are rare (alot of people pick Auto).