Rumor has it Porsche is working on a GT2 RS. If true, the power increase and weight decrease will stun you.

The rumor mill is at it again, speculating that Porsche will release a new GT2 RS. PistonHeads is reporting the German automaker may be building a lighter GT2 with a 580 horsepower engine.

Built specifically for the track, the Porsche GT2 RS would appease critics who claim the current GT2 is better on the road than on a circuit. Helping to lighten the load is an acrylic glass rear window made by Perspex. Additional mods would include center-locking wheels, possibly similar to the 19" RS Spyder forged aluminum model available for the 911 Turbo.

These modifications result in an incredible 14% weight reduction, or 200kg.

The current Porsche GT2 was introduced at the Frankfurt Motor Show in 2007 as a 530 bhp (390 kW) unit. Thanks to a horizontally-opposed six-cylinder 3.6-liter twin turbo engine, it goes 0-60mph in 3.6 seconds, on its way to a 204mph top speed. All this comes at a cost: $191,000 USD.

Although the 911 GT3 RS costs $20,000 more than the GT3, it seems likely a GT2 RS would be significantly more expensive than a GT2. After all, a Porsche GT2 costs $60,000 more than a 911 Turbo, and also features a 50 hp increase and 145kg weight decrease.

Is it possible that the Porsche 911 GT2 RS will cost upwards of $250,000? Only time will tell.

Gallery: Rumors: Porsche GT2 RS in the Works