Everyone should be given this site when they register, www.endwrench.com.
Since you have the '98 RS I'm pretty sure you have the twin cam engine, if that matters in the case of a timing belt.
I guess my question to everyone that reads this post is, does it matter which 2.5L you have (twin or single cam)? I think they switched to single cam in '99, but I have the lil 2.2 anyway.
Anyway, try this site out, http://www.endwrench.com/pdf/engine/...ReplaceF00.pdf
Hopefully this will answer all your questions.