My 2p: I changed the front springs from standard to HD some years ago. The combined weight of the spare wheel and a MM up front was too much.
The HD springs lifted the front, measured at the bumper, by 40 mm. In my experience, the change was 100% positive with way better behaviour especially on small and windy gravel roads. Much better steering precision and it wasn't too hard either, just a better "feel".
These springs, and the dampers have later been changed to softer OME spring and HD OME dampers.