How will this apply to vehicles such as designated race trucks that are not required to have a DPF and are not registered in any way for road useage? What about for retrofits of putting a newer diesel into an older body style that is emissions exempt, or the DPF is not required for the older truck to meet it's emssions output(like my SUBURBAN which meets all emssions criteria for 95 without any of this equipment)? Just curious if this will affect all USA customers even the ones who can LEGALLY remove the emissions equipment for there intended purposes.