problem with Autozone is their website and stores are NOT communicating at all. If the website says an item is in the store, chances are it is NOT. I would recommend you call the store before relying upon their crappy website's advice. The website cannot even update your profile with the data at the store. People at the store claim they can't either.
The employees are generally helpful at the store. Unfortunately they are handicapped by what looks like a horrible Corporate Climate and very bad IT systems.