Hi to all the forum. My name is Raul, im from Spain and im tunning amd restoring an old 50 piaggio typhoon. I have built upside down the engine with this parts: Polini sport with exhaust raised 2mm Crankshaft metrakit pro race with standard bearings Malossi multivar variator Metrakit pro ajustable clutch Standard belt Yasuni r 21 dellhorto black edition The bike performs pretty well, it has tons of torque and its easy to make some whellies. I wish I can get and provide some ped knlowledge!!