There have been rumors that Lexus is plotting a high-performance F version of the LC to serve as the company's new flagship. Lexus still hasn't confirmed the model's existence, but our spies have spotted an LC prototype undergoing testing with some sporty enhancements that suggest we're looking at the long-rumored F version.

At the front, the Lexus LC F prototype features a modified bumper with huge air intakes. While the bumper doesn't look production ready yet, the car already looks more aggressive than the regular LC thanks to its larger wheel arches suggesting the car will have a wider track. The prototype also features larger wheels, high-performance brakes and stacked quad exhaust pipes echoing other Lexus F models. Being a test mule, chances are the rear fenders will also be larger on the production model.

The big question, however, is what will power the LC F? Rumors have suggested everything from a naturally aspirated 5.0-liter V8, a supercharged V8, and a newly-developed 4.0-liter, twin-turbo V8 delivering 621 hp. These rumors haven't been confirmed, but it's safe to assume it will be significnalty more powerful than the LC 500, which has a 5.0-liter V8 that produces 471 hp and 398 lb-ft of torque. This enables the stylish sports car to hit 62 mph in 4.4 seconds before reaching an electronically limited top speed of 168 mph.

The LC F will also be a lot lighter than the regular LC thanks to the use of carbon-fiber reinforced plastic. Considering the LC weighs a hefty 4,280 pounds, a weight reduction is very welcome and should make the LC F more satisfying to drive. Finally, it looks like the

Lexus LFA successor we've been waiting for is going to happen and we couldn't be happier.