It's actually much cheaper to buy it at Autozone or Checkers... I replaced mine a year ago after my car TC was stolen and I didn;t want to pay $400 to have someone else do it... You can buy the entire assembly from Checkers I know for sure, it's very easy to do... There is a small hole directly under the ignition cylinder that needs to be accesssed by a toothpick or small long object... pus it in there and you will feel a small piece of metal retract... One that is retracted, you can pull the entire ignition lock assembly out in one piece.... Congrats! you just now learned how to steal every 90-97 TC without breaking the assemby! Anyway, following the directions of the new lock cylinder, you re-install the new lock igntion cylinder back in to the hole and voila, you're done!
But your key doesn't work with the new lock? A trick to this is to replace the new ignition lock cylinder innards with your existing lock cylinder... When you buy the new assembly from Checkers, there are two pieces to the assembly... Of course it comes "assembled" there is one cylinder(part where the key slides into) that fites inside the outer "shell" it's kind of like a cork and a wine bottle... The cork is the inner igintion cylinder that slides into the wine bottle which is the housing of the igintion cylinder... And that entire assembly fits into the upper housing assembly... If you need pics, let me know and I can get you some...