How cheap and how fast!?
With real carb, real air filter, real exhaust, real spark plugs and real ignition (nanoplex) you can gain up to 3-4hp and better dynamic. But this is only a wake-up tuning or soft tuning. Those things you will have to make whatever you build, so this will be a good base for something harder.

You can combine standard 263* camshaft with 650E cylinder head. Adjust with 5* the cam, machining the big wheel (so called in polish "prefazowanie"). Fit a BIS's inlet valve 34mm. This way you will have almost a Panda 30 setup. You will have 30hp about 5000-5500rpm for sure. With standard parts only. If you want, you can fit even 35mm inlet valve from CC700.
