Make one. Two pieces of 3/16 X 1/2 X 12 to 18 inch flat stock hinged together with a 3/8 bolt. Drill and tap for 5/16-18 on the ends. Grind the threads off the ends of a pair of grade 8 5/16-18 bolts to fit the sockets on the steering box nut. Thread them in, ajust them to the same on the stick out dimension from the flat stock and tighten a couple of nuts down on them to hold them in place. When you put the studs in the spanned nut, slip a piece of pipe over the hinged end to use as a handle and hold everything together. You’ll find an adjustable stud spanner useful for a lot of other things once you make one. This is similar to the end result.
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