I'm not 100% sure what that kit looks like, but:
The side body skirt will fit no problem.
If it comes with a front airdam/spoiler, that will not. The bumper changed in 98. If it is a bumper cover deal, then it will most likely fit.
If the rear is one wrap aroung peice, it won't fit, the rear bumper also changed in 98. If it just 2 seperate pieces that go on each side of the rear bumper extension, then they fit.