Just wondering if any of you guys out there have ever done anything with an xc 600 twins. I've got a clutch kit, y pipe, reeds and reed spacers, boost bottle, and throttle pack on it so far. It's pretty quick but I'm looking at maybe getting into the motor a little. Can I put 700 cc pistons and jugs on the 600 block. I don't think you can bore the cyliders because they are nikasil coated right? Let me know guys, I got some buddies with 700's that need to be shut up this year. Thanks!