German tuning outfit G-Power has just revealed a new aftermarket package for the 'old M3,' adding a large ASTA T1-518 centrifugal supercharger that boosts output from 343hp and 269lb-ft to 450hp and 339lb-ft of torque. The result of having an additional 107hp is performance figures of 0-124mph in 14.7 seconds (down from 18.1) and a top speed in excess of 186mph. The tuning package includes 20-inch 'Silverstone Diamond' alloys and a coil-over suspension.