Here is a nice video published by XCAR on Youtube of Pagani Zonda S 7.3 driven by Horacio Pagani himself. This is the 6th Zonda ever made by Pagani and the first ever to be exhibited at the 2000 Geneva Motor Show.
The engine is an AMG-sourced 7.3 liter V12 – 555HP (408 kW) at 5,900RPM and 750Nm (553 lb-ft) of torque at 4,050RPM. The dry weight is just 1,280 kg, so the power to weight ratio stands at 2.3 kg/HP. 0-100 km/h in 3.7 seconds and a top speed of 354 km/h (220 mph).