I have never seen ANY VX mud flaps in the US although I have seen them at some Japanese meets. Some have gotten generic ones at Pep Boys and made them fit.
Really disrupts the lines of the VX though... checkto see if it really is against the law in your area. Three of use were stopped on the way into Moab last year and it is illegal there without flpas - but at least he let us off as tourists....Roosters look cool in the rain or mud!