This is my peds setup. 70cc kit, 15mm amal carb, proma circuit
Its pretty sick powerwise, but let me tell you that these engines wear out much much quicker than a stock. the cyl liner tends to disinegrate which makes the engine useless after some good wear.
I dont go 60mph on my ped at all, i use the kit to get me out of harms way, and for the torque to climb hills. I seldomly even go faster than 40. If you treat the kit well, it will last however.