Whats up people its me again with a few questions. Well you see i have a 212cc predator engine that has the governor removed on my yerf dog (idk the model). I want to put a 420cc engine on it but my questions are is it worth it? Is a 420 better than a 212 ik it has more horsepower but wht about speed wise and climbing mountains( small mountains). My go kart has a torque convertor on it thats for up to 8hp so do i have to buy a brand new torque convertor or can i just buy a new clutch for the torque convertor. I'll be glad to recieve any information you have off this. Should i just keep the 212 on it? I also found a 670cc engine i think on cdaiglists for like 300 or 400 which is a good price but i think thats too big. Any informtation will be apprecatied