1972 Mustang - locks don't work?

Is there a clic parts store there that specialises in clic mustang reproduction parts, you should be able to buy a complete ignition barrel and 2 door barrel and keys as a complete set for your car, this way you will have the same key for ignition and both doors. And I think the boot or trunk key is different to the doors is this how they were when new from factory? because I know the ford falcons from Australia in the 70's were like that. Here we have a store called "Rare Spares" and you can buy a complete set of ignition and door barrels to suit your clic cars there has to be something available like this in the States. hope this helps