I put a china bike motor on this rizatto frame I got for negative 40 bucks at mid ohio last year:
I made sure the mounts were all removable, basically it was the only engine that'd fit in that space cuz the original motor is short with a vertical cylinder.
It sucked.
It went just over 30 but took forever to get there and it was such unreliable garbage that after trying to sell it I talked the kid outta buying it because I couldnt do that to someone. I was only asking $75 for a running bike but man it was such total shit I couldnt saddle someone else with that trash.