My first LS430 was a base model, and my second one has "Sport" suspension. Does anyone know if the shocks are different between them? I'm due for shocks on LS #2.

 

Yes they are different. Stick with Lexus parts if you want to keep your "Sport Suspension" feel. I don't know what year model your car is so the link is for rears of a 2006. Oddly enough Lexus of S Atl doesn't show a Sport part number for the fronts. I replaced the rears on mine so I'm speaking from experience but maybe the fronts are all the same...? Hopefully someone else will chime in with more info on the fronts.
https://www.lexussouthatlantaparts.c...853080141.html