Disappointed with the Dallara 190, designer Tolentino was replaced by Nigel Cowperthwaite in 1991 for the design of the 191, and the team's Ford Cosworth engines were replaced by new Judd V10s.
Komandai nusivylus Dallara 190, kūrėjas Tolentino buvo pakeistas Nigelu Cowperthwaite 1991 metais, kad sukurtų 191, taip pat komandos Ford varikliai buvo pakeisti į naujus Judd V10 agregatus.