URGENT!! - >Me and my pals are currently designing a formula car for a competition, but the rules have constrained the engine to be under 610cc. And this has us stumped, because getting an engine under that to suit our needs is proving difficult. I need suggestions to what engine must i use and from which vehicle. Is going for a sportbike engine an option that i must consider?? Anyone with a solution please reply to this, we are working on a schedule and need to zero in on our engine fast.