Please help with tranny bolt

[Robert.howard79]

Does anyone know the size of the bolt on the top of the right side drive tranny? Is it Torx or Allen? I've narrowed the allens down to an 11/32 which I don't have and will have to order. My dry tranny is greatly appreciative.

Robert

 

[V]

If you're talkin about the transmission fill plug I believe its 3/8" allen.