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My bump steer set up looks just like yours, but instead of bolts They sell a stud, 5/8 threads 3” long and has the taper on it so you don’t have to drill out the steering arms, just bolt it in.
The hotchkis setup has studs with taper on one end. Similar to yours. Commonly bought at Circle Track supply places.
I see you are running the 67-72 centerlink. Don’t know if that changes then inner tie rod pivot location slightly.
Just some thin shins can make the small adjustments needed. So many variables compounded in aftermarket parts, custom parts, factory k-members and factory frames...no two cars will be absolutely alike. We’re trying to dial something down 0.050, less than 1/16”
There’s also a Howe brand tie rod end that is fully greasable ball joint with a all thread stud. You can drill out your tapers. Or I think someone offered a cone insert.