Just wrap the wire around the linkage shaft and the elbow of the tranny selector. It'* going to rotate on that wire a bit so pay attention to what'* there and what it can rub on or slip off from. Wrap it a few times around, like 10. If that kinda works but doesn't seem to do the trick, a zip tie doing the same thing would be my next option. Probably wouldn't be any better than the wire tho.
Also, JB weld is an amazing tool.. you can easily sand a bit of the ball on tranny and a tad bit on the plastic linkage clip then jbweld that monkey on there for overnight after it gets a good motor heat to it. I wouldn't be messing around with bolts and screws and stuff.. but who knows if what i'm talking about has any substance to it...
'89 SSE - GX3 -190k, 155k on body - Back for another ride.