2003 Ford Mustang SVT Cobra 2dr Coupe (4.6L 8cyl S/C 6M)
I drive for fun and use as a work car. The only problem I have had with the car is a noisy rear end which the dealer replaced under warranty within the first year. I am making about 500 rear wheel HP with pulley/chip, etc. I twisted a spline on the left half shaft at the drag strip with drag radials. That is the only problems I have had. This car is the most fun to drive, easiest to modify, and the most controllable car I have driven. It has never gotten out of control no matter how hard I drive it, wet or dry!
Power and handling. AC is cold and does not seem to affect the power. The suede leather seats hold you in place while cornering and are warm in the winter, but not hot in the summer.
No improvements needed unless you are going to race it regularly.