Like most people, I'm looking for more speed. I've got a 18hp honda 4 cycle that I love on my rally kart, but I want something stronger for the road. so. I'm looking on ebay for a decent deal on a new 2 stroke motor with at least a 4 speed trans. I want to be somewhere from 125 to 150cc. The motors on ebay all say 4 stroke, but they are still small pit bike engines. Am I just not looking hard enough? Where should I look to get a good powerful 2 stroke? what if I use a 150cc 4 stroke with gears, would this be preffered to a similar displacement 2 stroke? Thanks guys.