Awesome car! Definitely the funnest car I've ever owned. It'll put you sideways before you can blink. To some people that sounds horrible, but for those who like speed it sounds great. I've found that parts are somewhat more expensive than they should be, I think it's because alot of people own Mustangs so the prices are jacked up.
The engine. It's so cool when your working on your car and people drive by and almost everytime stop and say, "A 5.0? In that!?" The sound. The new Mustangs sound good, but there is something about the old 5.0 sound that's just so much better.
Hard to work on, everything is jam packed under the hood and under the car. If you want to replace anything like the O2 sensors or starter you have to take the cross member off of the car. Also, move the existing cup holder and add another. If you have legs you're not siiting in the back seat.