There were 250 different key combinations so it is possible you could find one that fits but that is still a large number to sort thru or even locate in the first place. The door and ignition used the round head key and the trunk and glovebox had the octagonal.
An un-coded lock cylinder is one that has not been cut for a specific key. The usual drill was if a lock was defective and an owner still had a key, the key was inserted in the uncoded cylinder and then the protruding tumblers were filed so they were flush to the cylinder.
After filing, when the key is removed the tumbler pieces will then go to their normal resting positions and stick out again to block the cylinder rotation.
Some locks have an emergency release but I don't think the trunk lock is one that has a second hole to release the tumblers in emergencies such as no key. If you have a decent local locksmith maybe they could pick the lock or you could send yours to someplace like Jesser
http://www.jessersclassickeys.com and have keys made to match the glovebox and trunk.
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