fɚðə nˈaɪntiːnhˈʌndɹɪd nˈaɪnti vˈɜːʒən ʌvðə kˈɑːɹ, dˈɛzɪɡnˌeɪɾᵻd ˌɛmpˈiː fˈoːɹ slˈæʃ fˈaɪv bˈiː, ˈoʊtli ænd hɪz tˈiːm ɹˌiːdɪzˈaɪnd ðə fɹˈʌnt ænd ɹˈɪɹ wˈɪŋz, ænd ɹᵻpɹˈoʊfaɪld ðə ɹˈɪɹ bˈɑːdiwˌɜːk ɚɹˈaʊnd lˈɑːɹdʒɚ ɹˈeɪdɪˌeɪɾɚz, ænd sˈɛvɹəl ˈɔːlnˈuː vˈɛntʃɚɹi tˈʌnəlz wɜː pˌʊt ɔnðə ɹˈɪɹ flˈoːɹ ʌvðə kˈɑːɹ.
For the 1990 version of the car, designated MP4/5B, Oatley and his team redesigned the front and rear wings, and reprofiled the rear bodywork around larger radiators, and several all-new venturi tunnels were put on the rear floor of the car.