how to default item revisions on PO for dual sourcing,

Does anyone have feedback on how to be able to default a specific item revision for a Supplier on a PO when item is dual sourced?  ie;

   Item ABC  revision 1             Supplier A

   Item ABC  revision 2             Supplier B

   Item ABC  revision 1 or 3      Supplier C

Aid buyers in efficiency and correct revision for Supplier on the PO.