Whakakī i te rerenga e whai ake nei: Mo te 1975, i whakahoutia te 308 ki nga whakaritenga 308B, me te whakahou i te tinana me te whakarereke i nga radiator hinu. I kaha ake te whakataetae o te motokā, ā, i werohia a Hunt mō te wikitōria i Argentina me
Brazil i mua i tana whati i tana pato me te roopu i te 1975 Dutch Grand Prix. Engari koinei anake te wikitoria a te kapa. I whakaotihia e ia te wa me etahi waahi pakari, i awhina i a Hesketh ki te whakaoti i te tuawha o te whakataetae kaihanga. I pakaru te kapa i te mutunga o te wa i te mea kaore i taea e Hesketh te utu ki te pupuri i tana roopu kaore i tautokohia, a ka neke a Hunt ki McLaren mo te 1976.