1969 Dodge Dart Ignition Assembly

Forgive the revival of a 2 1/2 year old topic but people often suggest to do a search before starting a NEW thread.....

1969 is a odd one year only ignition switch.

I'm expecting to take delivery of a '69 Dart with no keys. I'll need to replace the ignition lock and door locks. If the ignition switch is one year only and unique, is the lock cylinder unique too? Online parts searches turn up a wide range of prices between $10 and $50+.