As far as I'm aware, as long as you disable and completely remove the X-REAS system, you can install any set of stock replacement shocks and struts. The 4600s do not add any lift up front and the rear shocks are only rated for the factory ride height, but they tend to ride softer on the street than the 5100s. The 5100s are capable of adding ride height up front and the rears can handle up to 2" of extra rear height, though they can be a little stiffer on the road. In general, we usually recommend the 5100s since the ride height considerations tend to be more important for most folks.