Hey everyone!, I have a '96 Ski-Doo Formula SLS (500). I was wondering how much would it cost to put RAVE valves on it. The machining is right there on the block. Evidently when Bombardier built this sled they put that there, because they knew they would use this in the later years on the '98 MXZ, and Formulas?. I figure if it will add bottom end power, more top end, and more economy why not? Has anyone out there done this? It seems it shouldn't be that hard of a job. Thanks for any advice![img]i/expressions/face-icon-small-wink.gif[/img]