Here is a pic of the clevis that came with that plow. (the long narrow one) It is JD # D 834 A and came with the plow. Sold the last one I had but ocasionally they come up on e-bay . Usually takes $75 to get a good one. You had the right idea but loke you said, a little long. Also a pic of the larger and later G 675 A clevis. About the same price but not correct for the 4 B.