I just received my Lonestar SU-557 reconditioned side yokes and I'm very impressed with their appearance. I'm guessing they have been sprayed with molten steel then precision ground to factory specifications. In looking them over real closely I can see minor rust pitting on the outer diameter of a couple of their splines and a tiny pit where the molten steel spray didn't adhere. The ends that contact the spider gear cross pin are VERY hard so I'm sure they will outlast the AC Delco yokes I installed 8 years ago. I bought them from ZIP Corvettes and I apparently got their last two because they're now out of stock.
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