I’ve got an '87 and the steering wheel lock is the same–it’s cast into the ignition somehow. I, too, spent a long time with my cage builder fiddling with it, removing the key cylinder, and using dentist-type tools. Finally I told him to #$%@ the finesse and grind the sucker down, which he did in short order. WARNING: He ground it down and reassembled everything without removing the remaining stub. Several weeks later while driving the car, the stub fell down in its guide hole and rotated, jamming up the entire works and precluding the key from turning. Luckily I had my tools in the trunk and nowhere to go in a hurry, so I disassembled the steering wheel column and fixed the problem. Moral of the story–grind or hack-saw the pin so it’s a little shorter. Then, push it down through the hole and grab it with a needle nose pliers. It should come right out since it only has a little bird’s mouth that engages the end of the activating lever arm. Good luck.
Sasha