Started with a sketch of the WW bracket and made some modifications to use the Kubota alternator.
Added pivot point closer to center of bracket.
Inverted bracket design, pivot on top gives better clearance. Will have to add some material to capture the bottom bolt hole but it looks like I can get both top and bottom that way.
Went to get some 7/16-20 nuts to test fit the seat belt harness. Enlarged the holes and inserted the eye bolts that came with the harness, looks good, three point harness from Summit Racing.