Go with MD. It's more than strong enough for the equipment you have installed and it'll still afford some level of comfort on the pavement.
HD springs come into play when the truck is used for heavy towing or weighed down with HD steel bumpers, rock sliders, ladders, light bars, roof racks, winch, expedition gear, etc. A lightweight truck with HD springs wills shake your fillings loose.
HD springs come into play when the truck is used for heavy towing or weighed down with HD steel bumpers, rock sliders, ladders, light bars, roof racks, winch, expedition gear, etc. A lightweight truck with HD springs wills shake your fillings loose.