 Pari gbolohun ti o tẹle: Ian Raby tẹsiwaju lati wọle ni BT3 ti o ni ẹrọ BRM bayi ni awọn ere-ije igba diẹ nipasẹ awọn akoko Formula One ati 1965, botilẹjẹpe laisi gbigba awọn aaye Championship. Ó ti wọ inú ọkọ náà fúngbà díẹ kí ó tó wọlé. : 1965 Italian Grand Prix, ṣugbọn lẹhin ti o kuna lati ni ẹtọ fun Grand Prix ti Germany ti 1965 ti o ti kọja, Raby ta BT3 si British Hill Climb Champion David Hepworth. Hepworth lo chassis BT3, ti o n gbe ẹrọ Chevrolet ti o tobi pupọ, fun ọpọlọpọ awọn iṣẹlẹ hillclimb ni ọdun 1966. 