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I had Warn Premiums and that little dinky spring sucks. It's like a little slinky that has been stretched out. I went with Superwinch. They don't have a spring, they have a locking wedge, no way for it to fail like the Warn. 35 spline axles I can't tell you, but call Superwinch and see what they say.
I like the Mile Marker 449SS. They were on sale when I needed hubs (half the price of the Warns) and no regrets, they work just fine. Will fit Dana 50 and 60 IIRC. You do not need the "conversion kit" they recommend to go from ESOF to manual. Ford changed the size of the groove for the retaining ring so I got some additional spiraloc 105-15 retaining rings to prevent rattling.