I bought my AMG before the 63 was built, I had the E55 AMG which was just shy of 500bhp and a massive chunk of torque, 5.5 V8 with a supercharger. They could easily do 700bhp with a remap and a different pulley. Mine had the delimit and easily got to 180mph. They were rumoured to do 200. I remember in France when the auto box changed up to 5th at 155mph.