Okay, so im new here and apologize in advance if im posting on the wrong part of the forum. I'm 5'7" and weigh about 160lbs. Im also i speed demon. Im looking for an engine kit from a reliable company that can offer me support and parts when i need it. I'll be riding it as my main mode of transportation (30+ miles a day) and would like to be able to go over 40mph. I'm currently looking at bikeberry.com's 2 stroke Flying Horse performance package which goes for $325 and claims to go 40+mph. I cant find any decent review on it however so im skeptical about throwing my money at it. Sooo, I guess the big question is what do you guys think is the best gas powered motor kit that is both reliable and fast(40+mph)?????????? Please and thanks in advance.