These trucks are higher in the rear for a reason. If you look at the rear springs on most factory original trucks, you will have lighter thinner curved leaves on the top, and a very thick flatter leaf on the bottom. The thinner leaves give you a better ride, but when you load it they sag down till they hit the thick flat spring on the bottom, which carries the load.
People with mall cruisers get away with front leveling kits since they never haul heavy loads. People who put leveling kits on their trucks and then haul loads notice their trucks are nose high when loaded. Then they decide to put heavier springs in the rear and ruin what little ride comfort they had with the stock progressive rear springs.
