I assume you are talking about the mounted picker? If so, then it will. I checked my parts catalog for these pickers and there is a set of mounts for the IH 706, 756, 806 & 856 tractors (all 4 of these use the same mounts).
Thanks Tom @ yes i was talking about the two row mounted i,m thinking about buying another picker from a neighbor it was mounted on an m farmall are those the same mounts ? I didn,t known it would fit that many bigger IH,s . thanks for the info.