Hey everyone. My name is mario I jus bought a 09 ninja 250r engine about a month ago. Last week while riding one the oil plugs came out and all the oil came out while riding. I think I need a new engine. I really don't rather should put a 250 engine or try modding it and put a 500 engine. How much modification do I have to do to the frame on my 250 to install a 500 engine. Please help!
