Does anyone know of a LEGAL conversion kit? Given the recent EPA rule changes, I thought we might see such systems start being offered. The only LEGAL conversions that I know of are done by EPA certified conversion shops that cater to fleet operators. Is there something preventing legal conversion kits to be available to DIYers or ordinary auto mechanics? Does the certification go beyond the materials - like the person doing the install must be certified in some respect? Is the certification cost on the system itself still too high to make such a thing practical?