I just bought a 2011 Mustang GT back in September. I have less than 1200 miles on it. I am having second thoughts about it. I put $5000 down on it plus I got the X-Plan price which was about $1500 below MSRP. I owe $29,000 on it. If I can find a vehicle around the same as what I owe and can trade it in even, should my bank allow this? What should I be caustious of?