Whats up guys! I have xr50 thats got some stuff done to it and have always wanted to make it street legal, ,so I can mess around in town and mainly just for the heck of it haha cause why not. It has 88cc big bore kit in it now but its too much for it and over heats in literally 10 mins. I was looking into it and really wanna do it, but do you guys think a honda grom engine would fit in the 50? cause they look like the same frame setup and bolt patterns. If so I wanna run the 5 speed kit in the grom, less drop in the rpms between gears haha, Thanks guys!