ɛkspˈiəɹɪəns wɪððə wˈʌnhˈʌndɹɪd fˈɪfti fˈaɪv ˌɛmˈɛm hˈaʊɪtsɚɹ ɔnðɪ ˈɛm fˈoːɹ tʃˈæsi sədʒˈɛstᵻd ɪt mˌaɪt biː pˈɑːsᵻbəl tə mˈaʊnt ɪɾ ɔnðə hˈɛvi tˈæŋk tˈiː twˈɛnti sˈɪks ˈiː θɹˈiː wˌɪtʃ wʌz fˈɔːɹməli nˈeɪmd "hˈɛvi tˈæŋk ˈɛm twˈɛnti sˈɪks pˈɜːʃɪŋ" ɪn mˈɑːɹtʃ nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi fˈaɪv tʃˈæsi, ænd ðætðɪ ˈeɪtˈɪntʃ ɡˈʌn kʊd ˈɔːlsoʊ biː mˈaʊntᵻd æz pˈɑːɹt əvə plˈænd "hˈɛvi kˈɑːmbæt tˈiːm" jˈuːzɪŋ ðə sˈeɪm tʃˈæsi.
Experience with the 155mm howitzer on the M4 chassis suggested it might be possible to  mount it on the Heavy Tank T26E3  (which was formally named "Heavy Tank M26 Pershing" in March 1945) chassis, and that the 8-inch gun could also be mounted as part of a planned "Heavy Combat Team" using the same chassis.