2020 HR 144 4x4
Tried the relaxed grip today in medium winds (15-20mph), and increased the speed from 65 to 75 and let the cross wind assist do its thing. Amazing difference. Now we’ll see what happens in stronger winds.Buy a 3500. I barely notice the wind.
If that isn't realistic, better shocks from Van Compass or Agile Offroad will help.
If you're camperizing your Sprinter, try to minimize additions to the roof and generally keep weight low.
Otherwise, loosen up your grip and arms, usually having relaxed hands on the wheel will actually smooth out the gusts more then white knuckles.