I think it will be difficult but not impossible to change the springs on the shocks with the DRC connections still hooked up? I don't know if they can be disconnected and re-connected without charging but there are some checkvalves in the system. Tru-line in Seattle quoted my $600 to install the H&R's at one time but they may not have really known about the RS6's DRC. Yes, I actually purchased a set of H&R's at one time but never installed them, sold them later on EBay for 1/2 price. It is decisions like that will help keep me poor, buy high, sell low.