go to images.google.com and search for the different years of the LSE's, so you can see the differences.
2002 LSE had a gray waterfall front grille, with a paint matched (instead of chrome) upper portion. Rear license plate surround was body matched too. Also had a different front fascia, different side skirts, and a different rear valance, with cutouts and factory quad exhaust tips (2 per side)
2004/2005 LSE had a chrome waterfall grille, witha paint matched surround. Body matched rear surround. This one also had a different front fascia/side skirts/rear valance.