If anyone can answer your question it will be Paul, but I can't imagine you can't find parts for that engine. From the limited info you posted it looks like you are looking for normal tune up type stuff to try to get it started, but when I did a search on Advance Auto Parts for your car lots of stuff comes up.

I think you may have gotten the wrong person at the store you went to. More and more we are seeing these places hire "parts people" who don't know a spark plug from a wheel bearing.

Fill in more of the blanks for Paul and you will get all the info you need and then some.

Don