I currently have benjammin's old revolution. I welded in a top brace (choke style,) solid radiator mounts and put some MB5 forks on it. I still need to wire up a pump and figure out a super blast ignition. I also threw on a polini super clutch and bell on it. We couldn't get the minarelli var to bolt on without some work. I'm not sure if piaggio vars with fit. I need to stop being such a pile and finish it. I also have a derbi senda so maybe i can double check that sprocket action for you.