A friend of mine has a 2015 2 Door Wrangler Sport that he uses for plowing. With the plow on the front rake is pronounced. We were talking and thought that a 1-2" lift and a stiffer front spring would really compliment the plow setup. I know most lift springs retain the factory spring rates, are the 4 door JK springs stiffer? Can he install a set of springs from a 4 door and get a minimal height and stiffness increase? And suggestions would be appreciated.