Pedzisa mutsara unotevera: Muna 1964, Reg Parnell Racing yakatanga kumhanyisa 25, ichishandisa injini yeBRM P56 V8, pasina kubudirira kwakakwana. Chris Irwin akaisa Reg Parnell Racing's 25/33 hybrid yechinomwe munhangemutange yayo yekupedzisira yeWorld Championship pa
1967 Dutch Grand Prix, nzvimbo yokutanga yomuenzaniso makore mashanu apfuura.