the ls models tended to have the nicer set rims, either the ones you have or the ones that i have on mine that are basically the SS rims only they are not chrome. also the LS sometimes have leather, and they do not have a three seats in the front, mine has a center console... all around the ls is just a bit more sporty then the base model. also there is an LS sport model and all that one is, is just a step below the SS model... different gauges, rims, exhaust tip, engine all the basics... are you sure yours is not an LS model? from your picture it looks like it might be.just when i got the car i was suprised to see the bigger engine in it. so what is the difference between the base one and the LS apart from the engine?
from the looks of things i would say that you have a cross breed between the ls and the base model lol....i wouldnt complain, i personally like the 3.8 better then the 3.4 anywaysit doesnt say Impala LS on the back or on the doors, plus it doesnt have the spoiler, and it doesnt have the fog lights at the front