Buuxi weedha soo socota: Twin Cam wuxuu dhowr jeer ka soo muuqday Formula 1 Cosworth Mk.XVI qaab ahaan inta lagu gudajiray qaabeynta ka socota 1961-65. Muuqaalkeedii ugu horreeyay wuxuu ahaa 1963 Koonfur Afrika Grand Prix ee Brabham BT6 oo uu wado David Prophet. Matoorku wuxuu ka dhex muuqday laba baabuur oo ku yaalla
1964 British Grand Prix, mid wuxuu ahaa Gerard Racing Cooper T73 oo uu wado John Taylor iyo kan kale John Willment Automobiles Brabham BT10. Dhamaadka kaliya ee la diiwaan geliyey wuxuu ahaa kaalinta sagaalaad ee Grand Prix ee Koonfur Afrika 1965, mar kale Willment Brabham.