Certainly if they sent you the wrong one by mistake, fight it RoyB, maybe the manufacture will help you out, point out this thread and all the free advertising they are getting.
The LS is still on the manufacture's website and they are available all over the web. Please everyone be sure of what you are ordering, if a dealer has an inventory of the LS you may be getting that. Unless it says G4 Elite it is likely the LS. It may be tempting because it is about $100 cheaper. But the Cheapest price for the G4 is 775.80 and you can get 5% off of that through Truckaddons.com