Dee ihe na-aga n'ihu maka paragraf a - N'afọ 1984, a gbanwere chassis mbụ iji nweta igwe Hart 415T wee ghọọ "101B", na sidepods ọhụrụ. Mgbe e mesịrị, e wuru chassis ọhụrụ nke ka mma ma bido na 1984 San Marino Grand Prix
, ebe nke mbụ mechara gbanwere dị ka "101C" iji were Ford Cosworth DFV (ụdị nke atọ nke injin na ọnwa ole na ole), na afọ gara aga n'akụkụ pods, na mgbe Detroit rụgharịrị na Hart engines ka a ga-eji dị ka T-Car.