Francis Gosselin built his Honda S2000 at his company Serious Swap in Terrebonne, Quebec, Canada. The project started with a salvaged shell picked clean after being imported from the USA. For the engine he chose to go with a 8.3 L V10 from a 2006 Dodge Viper that produces 500+ horsepower and 525 lb-ft of torque. That power is sent to the rear wheels through a T56 six-speed manual transmissiom, custom driveshaft, welded Nissan 350Z differential, and custom axles.
Source: SeriousSwap FB page and DriverMod