I do remember hearing that HDT made one Magnum ute, and they built one from a secondhand ute for a customer. I don't know if the new one was built by GMH as a 5.0L or not. Dr Terry told me last week he saw a genuine WB L31 ute a week earlier. It had L31 on the BODY plate, T on the VIN and had a WT prefixed (original) engine in it. It was a Holden though, not a HDT so not a Magnum.