A look inside an air-cooled medium case FOM T/Q. All FOM torque converters should be similar'https://picasaweb.google.com/PeteinCalif/FordFomConverter?authkey=Gv1sRgCN2znfPl2prXSw#5731734844673808322
Since this is bolted together rather than welded it will be relatively easy to add stall speed. Pete