Check this out:
It is a quarter scale V8 engine (a running model) made by Aeromarine. It is AWESOME!!!
I'm not sure if it is meant to power a boat (as they are in the boating aspect of the RC business) or just to sit there, run, and look cool. But either way, as I said, it is awesome!
*Edit* - If you want one, you better order soon, as there are only ten left!