Rubuta ci gaba don wannan sakin layi - An yi amfani da FX3B don tsere uku na farko na kakar 1973, kuma New Zealander Howden Ganley da Italiyanci Nanni Galli ne suka tuka shi, kodayake Jackie Pretorius ya cika a Grand Prix na Afirka ta Kudu
lokacin da Galli ya ji rauni. Sabuwar IR ta bayyana a tseren na huɗu na kakar, Grand Prix na Spain, tare da Ganley da Galli da ke dawowa a cikin motar. Da yake cancanta a layuka biyu na ƙarshe na grid, Italiyanci ya gama na 11 yayin da Ganley ya yi ritaya lokacin da ya ƙare man fetur. Dukkanin direbobin biyu sun yi ritaya a Belgium, ta hanyar gazawar injin Galli da hatsari ga Ganley lokacin da aka kama shi. Dukan direbobin sun yi ritaya tare da gazawar rabin-shaft a Monaco Grand Prix, kodayake Ganley ya cancanci na goma mafi sauri, kuma bayan tseren Galli ya bar ƙungiyar kuma ya sanar da yin ritaya daga Formula One.