Need my H2 guys help out there...

[IPStack]

Ok, due to divorce I traded in my H2 for a F-150. I went to the bank and got a draft for it. Th truck is a basic F-150 but went to a place called BC Motorsports, got 22" Rims, aftermarket hood, dual exhaust, after market tail lamps, dvd player inside. They are all factory installed and covered on the factory warranty.

The Problem: I have had this thing about a month now, My credit union will not finance the full amount, because when it is all said and done the truck is only worth 34,500, I was paying 42. (Yes bad idea.) But now my credit union will not honor the draft, which in turn makes my original contract null and voind, so I understand......
If they still have my truck can I get it back at this point? I miss my H2 and regret trading her in....
Just wanted your opinon thoughts on what I should do, you guys have ever been helpful to me....

Thanks,