Roush 427R Good deal?

I did a KBB value for a regular 2007 GT with 76k miles on it and it came back at $19k which seemed high but I would say that $17k for a 427R sounds like a pretty good deal. The spark plugs may give you a hard time if they have never been changed though. See if you can have the dealership change the plugs for you before you pay for the car so they will be responsible if they break all the plugs off when they change them. That should be about the only maintainence issue that you should run into.

It is not difficult if they will come out without snapping off in the head. Ford used a crappy plug design in the S197 and they tend to get stuck and snap off which can be a huge pain to get out.