Technical M/t front cover seal

I have a Mickey Thompson cast aluminum front timing cover, for a FORD FE engine. This is the cover that has the Mag drive built into the cover. I am looking to find out WHAT IS THE CORRECT CRANK SEAL NUMBER for this cover. The seal I need needs an outer dia of 3.750 and the standard Ford crank snout dia for the inner. If anyone knows what seal it is or who I might contact that would know PLEASE let me know.