Corvette specialist Callaway first unveiled its C16 supercar in 2006 and then followed it up less than a year later with the launch of the open-top Speedster at the 2007 Pebble Beach Concours d’Elegance. Back then, the car was already sporting a supercharged V8 engine and outputting more than 600hp but the guys at Callaway knew they could squeeze even more power.

That’s why they’ve just released a new supercharging kit for the C16 range, lifting output to 650hp and 585lb-ft of torque. The C16 is powered by a hand-built version of the new Corvette LS3 engine, fortified with an intercooled supercharger, CNC ported cylinder heads, upgraded valvetrain, Callaway cold-air intake and free-flowing exhaust and a custom computer tune. The car also features an uprated brake package, Eibach Multi-Pro suspension, Dymag wheels, and a Deutschleder full-German-leather interior. All the performance mods sees the car go from 0-60mph in 3.3 seconds, run the quarter-mile under 11 seconds, and deliver a top speed of 210 mph.

The true beauty of the C16, however, is that it comes fully loaded. The only options are the sport bucket seats, custom-fitted Schedoni leather luggage kit, and the choice of either manual or automatic transmissions. The Callaway C16 Coupe and Cabrio are priced at $150,000 and $158,000 respectively, while the Speedster will set you back a cool $305,000.

If all this seems too much for you, Callaway also offers a supercharger kit for the regular C6 Corvette Z06. Priced at $18,000, the kit comes with an Eaton/Magnuson Roots-style supercharger and lifts output to 580hp and 510lb-ft of torque.