Whakaotihia te rerenga e whai ake nei: I te tau 1964, ka timata a Reg Parnell Racing ki te whakataetae i te 25, ma te whakamahi i te miihini BRM P56 V8, me te angitu iti. I whakanohoia e Chris Irwin a Reg Parnell Racing's 25/33 hybrid 7th i tana whakataetae Whakataetae o te Ao whakamutunga i te
1967 Dutch Grand Prix, te waahi o te tauira o te tauira e rima tau i mua.