For second gen the stickers for the attached images differs in a few ways.
1. The first sticker (2003) has moonroof, HID's, Advancetack, and many other options as standard equipment.
2. The second sticker (2004) does not have those options listed as standard equipment.
3. First one says "premium sport", second says "sport".
4. The attached interior pics have an aftermarket woodgrain kit installed.
5. To clarify the orginal question, first gen LS's came basically in two packages.
Sport-sport suspension, 17" wheels, select-shift trans, no chrome on the bumbers, and leather steering wheel and shift knob. (The LSE was a sport, with a bodykit basically).
Luxury- No select shift trans, woodgrain steering wheel and shift knob, standard 16" wheels, and chrome stipes on the front and rear bumper.
As always there were options you could ad to both models...
Hope this helps!