txs,
I have rebuilt the dana 70 kingpins off a '72ish IH 1 ton. No they where not the same as a dana 60. The kingpin bearings I got at Napa, don't recall the number I just took the old bearings down and matched 'em up. The upper bearings are bronze bushings and as far as I could find unavailable. Mine were in good shape so I reused them. I don't see why you couldn't get bearings for the top too. You have to shim them for correct pre-load anyway. I could not find the shims anywhere though, and I've even got a dana part number.