Really quick, for those unfamiliar with the backgrounds, here are the biographies of Elijah Muhammad (Poole) and Malcolm X (Little):
http://www.danielpipes.org/341/how-elijah-muhammad-won
http://www.biography.com/people/malcolm-x-9396195
Long story short, ITTL Elijah Poole was active in organizations like Marcus Garvey's United Negro Improvement Association and the Black Shriners, as well as the Moorish Science Temple of America cult. Eventually, he became the leader of Wallace Fard's Allah Temple of Islam (later, the Nation of Islam), the largest faction of the MSTA after it broke apart in the wake of Timothy Drew's death. And Malcolm Little followed a similar path.
However, around the same time that Elijah Poole was getting involved on MSTA, orthodox Sunni Islam was gaining some of it's first serious footholds in the Detroit area.
So, what if Poole, got involved in one of the early Detroit mosques instead of Fard's Allah Temple of Islam? And assuming he was able to draw on his talents as per OTL, was able to grow orthodox Sunni Islam like he was NoI or better? Especially assuming the he managed to attract Malcolm Little, as per OTL.