I'm tinkering with the idea of swapping my 2019 ybr 125 G's engine with a 250 cc 4 cylinder beauty . I was planning on buying one of those quad cylinder monsters but everything is so bloody expensive now. right now this is only an idea. I don't know how I'm gonna do it , where I'm gonna find a zeal engine laying around or even if I can afford it but I would really appreciate all the help I can get (advice in my case)