A67-187 had spent much of the time since it was disposed of by the RAAF in 1958 as a source of spares for Illawarra Aviation, which operated two Mustangs under a targeting towing contract. It was sold in 1969 to a businessman who planned to install a RR Dart from a Viscount. The registration VH-UFO was reserved but the project was never finished. The aircraft was exported to the US. It flew again as a stock Merlin engined Mustang N919WJ.