Any large truck supply should be able to get Budd wheel nuts and studs in both right and left hand threads. Another source would be Michael at 3rd Gen Automotive: https://thirdgenauto.com/
The Ford part number for the left hand threaded front stud is 51-1108. This cross refers to NWRA X1051 which cross refers to BWP (Brake and Wheel Parts Company) M103. It is 2 1/4” long with a 1 3/64” shoulder. Any better parts seller can get it for you. The nut is the standard 3/4” x 16 tpi left hand thread Budd nut. Stu
Same as Dodge military nuts. Somebody near him probably has coffee cans full of them too that wouldn’t cost postage. Cadmium plated new from Napa (etc) wouldn’t be expensive though. Stu