Just looking for reviews on the 660 kit in the pro ride chassis. The only one I have seen a review on is by jonce and was looking for some others. My 13 pro 600 currently has the carls clutch kit and PA 13.6 head. The sled runs awesome for a 600 and I think I am going to do the 660 this summer but I want to make sure it is a worthwhile investment over what I have.