Venchurs Vehicle Systems, a CNG Converter for Ford, announced the availability of its EPA-certified CNG conversions for the 2013 Ford Super Duty truck line. As a Ford Qualified Vehicle Modifier, Venchurs offers both bi-fuel and CNG dedicated conversions for Ford F-250s and F-350s. Because Venchurs is a QVM, the original Ford warranty stays intact and the conversions can be financed through Ford Credit.