ðɪ ˈɑːɹkɪtˌɛktʃɚ wʌz sˈɪmɪlɚ tʊ ˈɛm wˈʌnhˈʌndɹɪd twˈɛlv ænd ˈɛm wˈʌnhˈʌndɹɪd θˈɜːtiːn ˈɛndʒɪnz ænd wʌz dɪzˈaɪnd tə mˈætʃ ðɪ ˌoʊvɚɹˈɔːl dᵻmˈɛnʃənz əvə vˈiː ˈeɪt jˈuːnɪt wɪð ɐn ˌʌndɚskwˈɛɹ ɪntˈɜːnəl mˈɛʒɚmənts.
The architecture was similar to M112 and M113 engines and was designed to match the overall dimensions of a V8 unit with an undersquare internal measurements.