I have a 2001 polaris scrambler 90 and ir needs rebuilt, I have a tought time finding cranks for these and top end kits. I see wiseco has a piston. I was told that these are the same as E-ton 90's and some other bikes is that true ? If I wanted to send it to somebody ( the engine ) and have it rebuilt and made a little zippier who would you recomend . I am guessing I can rebuild this myself I just thought I would ask. Thanks for your reply