How hard is it to change a starter in a 340 Duster?

Before you install a new starter check the relay first. If you can jump the contacts on the relay and get the starter to start you probably have a bad relay. Seen too many starters replaced and still not start! Your relay should be on the drivers side on the fender near the battery.
If I'm wrong here someone please correct me. I have a 73 Dart.