The M5 gets a coil-over suspension, aero enhancements, a high-performance brake package and Michelin Pilot Sport SP2 tires to keep it steady at speed.

G-Power also optimized the fuel mapping to achieve the 750-hp mark. It says the superchargers could push more and the engine, as modified, could produce up to 900 hp.

The tuning kits are for sale from G-Power. The SK III conversion will push the output of your M5 to 730 hp for about $72,000. But if all you need is 600 hp out of your super sedan, you can opt for the anniversary kit for just less than $20,000. That is, of course, on top of the $85,000 you would pay for a 2009 BMW M5.