The input shafts are all the same you won't get a better one. The stub shaft has 3 versions. the first version is absolute garbage I believe it was replaced in 94 or 95. You should have the second shaft. The way to tell the difference in all the shafts is easy when you have them all side by side. the first shaft had a big groove in it. The second shaft had a taper on it and the third shaft has splines that go down a little farther with no taper or groove. The latest shaft is F8AZ-7F351-AA They aren't very expensive.
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