Rubuta ci gaba don wannan sakin layi - A cikin 1974, Postlethwaite ya tsara sabuwar mota don ƙungiyar, Hesketh 308, wanda ya kasance a shirye don Silverstone International Trophy, wanda Hunt ya ci nasara, yana yin wasan farko a gasar Grand Prix ta Afirka ta Kudu. Motar ta kasance mai karfi, ta dauki matsayi na uku a Grand Prix na Sweden, Grand Prix na Austrian da kuma Grand Prix na Amurka
Ka yi haƙuri. Domin 1975, an sayar da misalai na 308 zuwa Harry Stiller Racing, wanda ya ba Alan Jones babban kyautarsa. Har ila yau, Polar Caravans ya sayi Hesketh chassis, yayin da ƙungiyar ma'aikata ta gyara 308 don Hunt. A lokaci guda, Horsley yana haɓaka cikin mai sarrafa ƙungiyar mai inganci da ƙwarewa kuma a ƙarƙashin jagorancinsa, ƙungiyar ta ci gaba.