I say rockers and doors too, before it spreads any more. The longer you wait, the worse it's going to be.

pics --> http://www.pavementsucks.com/tech-article-37.html

Yours is slightly different than all other years though, it has a chain guide or something like that that has to be removed. If you have a Haynes manual then you will see what I'm talking about in the timing chain section where it refers to the 98 model.