can anyone tell me if the kohler m16 m17 m18 m20 have the same crank height and mounting bolt hole in the front case and on the bottom..i blew up my kohler m18 wondering if i can sub any other eng i also heard that a kohler command 18 can go in place but hav diffrent nounting holes would hav to drull out my mounting plates they also say it has the same crank height not sure if thats true can anyone tell me thanks