It' all depends on the mileage and how it's driven. It you do a lot of wot from a dead stop chances are your gonna have something burning up in there, especailly if you have any mods performance wise. the trannys in the 97-03 tend to burn clutches easier. you really should do a filter change every 15000 miles with both but the 97-03's you need to pay a little more attention to it.