highlandhovercraft

HI, I am building a large hovercraft and it will be powered by a standard EA20 2 ltr from a 1998 forester (Japanese import) . It is a non turbo and as far as I know totally standard.

To be able to gear the hovercraft correctly for lift & thrust I need to get a power curve of the engine. It doesn't have to be from this engine but any standard non turbo EA20 engine, so I can get a basic idea of the power band of this engine.

Does anyone know where I can find a power chart / graph of the above engine?

I live in north west Scotland so taking the car to a rolling road is out of the question