I dont like messing with dealers, especially for used cars. With that said it doesnt look like too bad of a deal IMO. Talk them down some for sure. Do a little research and then nit pick the thing apart even bs a little. The salesman probably knows nothing about the car. Try to get it for 5k is my advice.
front bumper, hood, and passenger side quarter panel look to be a different color red. like it's been resprayed recently. may be the lighting though. also the trim piece behind the front passenger wheel looks out of place.
Yep its had some paint issues. My 01 was laser red like that, and its incredibly hard to paint match it. It takes 3 different colors to make that red. Then clear coat is needed. Keep looking around. The DFW area has alot of Mustangs in the market. I am looking now too lol.
I didnt look to hard at it before but that thing has definatly had body work done like everyone else said. Be sure to get a carfax on it. If it checks out clean make sure they drop a ton off the price for that paint.