This is my current street car, a 997 Turbo. It is completely stock except for a roll bar, large cat exhaust and some minor chip retuning.

It does 2:15 lap times on the Sebring long course, until the stock brake pads get hot; it gets 25 mpg on the highway at 78 mph; does zero to 60 in well under 4 seconds; and has a great I-Pod stereo and air conditioner. Pretty much game, set, and match for now.   It has 75,000 miles on it running me back and forth to the Orlando airport with frequent track days.  It is usually one of the fastest cars in any run group until the brakes get hot.  I won’t put racing pads on it, as the street stock drivability is awesome and will stay that way.