Considering a very basic 2.5" kit that basically levels the truck but leaves 1" of rake so that your not butt-low when hauling. The kit itself is only about $125 but I was advised by my local shop that the 2015 requires additional modifications as the stock design (stabilizer bar maybe?) isn't angled correctly to handle more then a 1" elevation change. Anyone have experience with this? If anyone has made the 2.5 mod without the additional mod how has it worked for you?