You can get any push-button lock re-keyed to match, it isn't very expensive. I have already had my two spares changed to match my ignition key, but the locks on the truck don't match the ignition.
On a REALLY weird note, my '54 GMC panel and '55.1 Chevy parts truck use the same ignition key. GM only used 60+ of the available tumbler combinations, but it still seemed like a wild coincidence.
