Ok... so for the past week I have been having difficulties finding out who are ligit companies to buy from, or should I buy a 2 stroke or 4 stroke? Friction drive, or chain driven... I like the look of the 49cc/80cc 2 stroke engines advertised on the web! I like where they sit, I just dont really know if I like the friction drive as of where they sit on the bike. But with 4 stroke, no adding oil w/ gas. So basically I want all of your opinions... whats the best place to buy a kit from? See I am actually up in between buying a full suspension bike or one with just front shocks, because the 2-stroke engines wont mount on the bike with rear shock! But, when it comes to rear shocks or engine.... I choose engine. Also i'm seeing these 2-stroke engines going for around $140 And that's right around the price range I am looking at.... suggestions on engine to get and where to get it from?