yeah. you can't do that. the dot cops will get you. i rode around on a 4stroke 50cc manual 4speed for a while some cops let it go. then one day a cop who actually knew some laws (crazy huh) got me and laid down the law. if they want to, they can take you directly to jail. unregistered, uninsured, no tag, no liscence. i'm in GA but most state that DO let you ride 50cc twist and go bikes w/ out documents, WILL throw you in jail for doing some jackass shit like that.
and also, you ain't slick enough. if you really wanna go fast, get the dual variating transmission from one of those 650cc vespas and graft that on there. then us moped dudes will think your cool and you might not go to jail as fast. but i bet you can't even get that bike to run stock yet.