Well I checked and my old truck does have the LS, the new truck does not, however I'm not going to let that be a deal breaker, my 07 CC diesel seams to get stuck often in the winter just because of all the weight that is on the front due to the diesel engine, I just put in 4 wheel drive for a bit and away I go, so I'm just going to take it with the regular rear end, I go down to the dealer Saturday morning (4/30/13) and do the paper work on the truck. So I should have a new truck by afternoon. When our new trailer is ready I'm going to drive out to Elkhart, Ind. and pick it up with the new truck.