What are the speaker size in the dash and rear door of a 1994 ford aerostar?

Does anybody know the speaker size for the dashboard on a ford aerostar? I checked with Crutchfield and they said they have nothing that will fit in the opening, can someone please let me know what size and what brand would be good to replace the stock ones with?What are the speaker size in the dash and rear door of a 1994 ford aerostar?4 inch in the dash the tail door has 3 1/2 and the mid panel has 6x9's.... you can find MB Quart in all those sizes and would sound good