I am building a Honda C70 full resto. Me and my buddy are both in the midst of C70 builds and naturally I wanna smoke him. It will obviously be run 100% street and long distances. He is running an air cooled Lifan 138. I only have about $300 to work with, will consider used. Have a line on a gpx125 1down4up in the classifieds for $250 but dont think that will do the trick. Suggestions please. This thing needs to last too. We take 2+ hour scoot trips. Would I be better off starting with a honda50 and building it?