Roadrunner or Not
Diana - some of us here are not experts, but there are a lot of extremely knowledgeable enthusiasts here.
I am asking you to seriously look at the number of guys here telling you the same thing compared to the number of people you apparently talk to who are telling you something different.
Numbers dont lie, you probably have 25 people here urging you to do something about what is at best a bogus car but at worst stolen property, and perhaps 1 or 2 that you talk to elsewhere who say that your car is just the way Chrysler did things in 68.
See the forest for the trees, please be smart and clear this issue up sooner rather than later - if you plan on leaving the car to your heirs leave them a gift, not a mess to deal with.
My 2 cents