Hi bill waiting for kobra to bring video out off there ppg/trike flying.there are ppg gx200s flying.im waiting for bailey carb kit for mine.kobra have said the price for there 4 stroke will be near to there 2 stroke ppg.we know kobra have done head mods but no info on what they done to get 65kg thurst other gxs have around 55kg thurst.im fitting my gx into a flphg.and wasp flphg is thinking of building one,