Well found out it is a Zenoah G23lh. As used in gopeds and mini motos. So looking for parts for this engine some of the things you can fit are unbelievable. For example: 10 degree flywheel advance key for better acceleration, big bore kit to take the small 22.5cc up tp 29cc!!, a complete new billet head with 13:1 compression ratio, of course there are a lot of tuned pipes and larger carbs. But I think the piece de resistance is NITROUS OXIDE KITS!!!!! Seems like i have got a good wee engine. So what do you think i would be better to use? A standard 25cc poulan with leccy ignition or 29cc 13:1 compression ratio, big carb, tuned pipe and nitrous? You gotta love peoples ingenuity!!