I ride with the PMB FIT 3's.... version 1 has a steering stabilizer with a center mounting plate and version 2 has the plate. So far I've been able to beat the ever living hell out of my PMB barkbusters and they just keep on ticking. If you get the Fastway 2" risers they already have the mounting hole for the guards pre-drilled and they mount up super clean.
PMB/Fastway stuff might be expensive, but so far I've been able to transition all my stuff between a WR450, KX450, and 450SXF usually by just changing mounting collars on items like the Adventure footpegs. I've saved money in the long run by buying the best stuff the first time. No regrets!