BannedCR500Riders.com

Hi i have a wiseco over size piston for my bike, now a magnet sticks to the cylinder and there is a slight bronze colour change on top of the cylinder so i think it is sleeved, but i took my cylinder to my local shop and they said it cant be re-bored as its nikasil? dontknow how to post pics on here?
http://www.tumblr.com/blog/05woodj1