Replacing ignition with a momentary switch?

Hi, i drive a 92 jeep cherokee, and it was stolen. About a week ago it was found and returned, but they destroyed my ignition. They completely removed the tumbler and now must be started with a large screwdriver.

Would it be easier to replace the ignition or install an ACC switch and a momentary ignition switch? I really dont know how to go about doing this

Depending on the other damage done I would purchase a new key switch. A junk yard will usually sell other damaged parts.