How much do you think the price can be negotiated of a new 2010 mustang. The base model v6 coupe. I believe the msrp is 20,900. How much do you think it can be negotiated two. Also im planning to trade in two cars for it. a 99 grand am GT with 48,000 miles and a 2002 mitsubishi lancer with 88,000 miles. What do you think i am looking at for a best case scenario price. Also do any of these cars qualify for cash for clunkers. Please answer.