Better... at what?
Shelby GT500 KR is lighter, more powerful and faster
The gt500 does 0-60 in 4.5 secs the srt8 does it in 4.9. In the quarter mile the gt500 does it in the high 12's where the charger takes mid 13's. Despite having a live rear axle the gt500 still manages a 1.0 lateral g force while the srt8 only pulls off a 0.89 lateral g force.
seriosly come on GT500 will smoke the camaro so bad that Chevy won't be selling them any more.
Better... at what?
The engine horsepower rating was 500 hp or better
turbo chargers
camaro
There are advantages to the challenger and advantages to a charger. So it depends what your asking.
The Ford Mustang GT500 car was marketed for 1965 and came out in 1964. You can learn more about the ford Mustang GT500 online at the Wikipedia website.
SRT Charger, better acceleration,better top speed and better handling :) Same chassis, same engine, same trans, different sheet metal.
The 2008 GT500 uses a Tremec T-56 transmission.
The 2007 Ford Shelby-GT500 has a V8 engine.