If you are getting just a "click" noise, it is not a starter shim problem. You may have a bad solenoid or cables. I would check them first. If the starter does try to engage the flywheel and you hear a grinding noise, or hear the starter spin, it my be a shim problem or starter drive problem. Autozone sells a shim kit in teh help section. They may also have several laying around from other starters.