This BMW M3 from tuning firm G-Power might look like it's not road legal but, in fact, it is. According to the  company, the new and improved M3 GT2 R package includes a mind-altering 720 horsepower 4.6L V8 along with a supercharger system complete with a modified crankshaft and a custom-made cooling system. 

Exterior appointments include a carbon-fiber body kit including a new hood, front and rear skirts, front lip, rear spoiler, and four (count em' four!) wings. If you want this beastly M3, it will cost you a hefty $257,000. 

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[via G-Power]