as far as a kit goes...hrm...i'm always partial to the TRD kit, but it's hard to come by for that year. frankly, i'd say do a 01 front end conversion(because the headlights and fogs look GOOD) and just get stock sideskirts.
but that's just me
if she's really looking for a kit...try and find something in ABS plastic...fiberglass shatters WAY too easily. check out David's stuff on www.vpower.net for some ideas.