anyone out there tried the petro works CV carb conversion it claims a dynoed 20hp gain ! the only thing is the intake manifold is changed also and its around $600 for whole kit ! Im gonna try buying everything but carb and e-bay the carb but wondering if its worth it .  

I think that the weber is a better and more reliable carb.  The kits are a lot cheaper and are pratically bolt-on.  The performance gains are about the same.  The other option is to try zuksoffroad.com  This guy has a couple of systems that seem to work well.  one of which is a caniballized FI system.