Yes, they are the stock springs with the bilstiens. So I have been running around with the airbags at 10 psi of air, and it stiffens up the back end just enough to really feel like a truck. Overall I am very pleased. About the only thing left that I want to do is to replace the mirror with an extendable tow mirror. There are quite a few options on EBAY that are priced hundreds less than thru the dealer. Anyone done one of these swaps and have anything good or bad to report?
