This probably won't help you, but for others looking for an auot loan over blue book (I beleive the minimum loan is like $7500 which probably rules out most DSMs.), try CapitalOne.
http://www.capitalone.com/autoloans/
Four years ago when they were "PeopleFirst" I was approved for like $17,000 for a '94 Stealth (they really didn't care what I bought). My bank would only do like $9,000. And they beat the banks interest rate too!
I'm not sure if things have changed but it's worth a shot.