The door locks were SUPER EASY to install! I didn't even need to remove the door panels! And now they work like new, because they are new! The old locks were getting hard to turn.
The ignition key was almost as easy as the door locks. Nothing was wrong with my ignition key lock, but I replaced all of them as a complete set (ignition key and door locks) so that the ignition key would match the door key.
I am very pleased with the quality of these locks and with the ease of installation.