How do I replace my ignition lock cylinder?? Keys wont go in or turn?? on 1993 Ford F-150 Lightning

Ok so as i stated I cannot turn the ignition key to the "on" position in order to be able to push and release the retaining pin. I have drilled out the pin itself and still cannot get the cylinder to release and come out. Am I missing something?? Anyone please help!! I am attempting to sell the truck and its pretty difficult considering I can't start the truck or drive it for potential buyers.

Asked by for the 1993 Ford F-150 Lightning