The customer service for supersteer is pretty weird. I asked them if a third-party sells them. would still warranty them and they said they don’t know. Also they said place where they get the castings for the SS 170 went out of business It will probably be discontinued for the foreseeable future.
Actually, they do offer one for the Evo. I’m installing one right now because my steering column has a bunch of slop in it. https://www.wolffeng.com/store/p14/GM109SS_Lower_Steering_Column_Bearing.html