Yeah, I don’t know too much about them to be honest… Told me the engine is taken from a Suzuki motorbike but specially adapted with a car like transmission incl. reverse. Had to wait for about 1/2 an hour before we could load it whilst they tested the hp output… It was about 5 horses down untill they tweaked it but they refused to tell me or the Norwegian client exactly how much she puts out… Would probably be enough to get your pecker up though if you took it for a spin!! 
I think it’s a V8 made from two Hayabusa engines welded together, it’s got an insane power to weight ratio in the Radical, saw them messing around with one on Top Gear or something once, sure looked like a lot of fun 