 Complete the following phrase:  With no local Ford product suitable following a change to international Group A touring car regulations at the end of 1984 as Ford Australia were not interested in homologating the XE Falcon for Group A racing, Johnson ventured to Germany and purchased a pair of Zakspeed constructed Ford Mustangs for the 1985 and 1986 seasons. While the Mustang years brought limited success, reliability and good-handling in the underpowered cars enabled Johnson to claim runner-up in the 1985 Australian Touring Car Championship, while his one and only victory aboard the Mustang was in the Group A support race at the 