I searched and still need an answer.I got a 03 yukon with 2 wd , lowered with MCG keys and springs. Its got the premium ride option. I am going to use KYB nivomat shocks in the rear but KYB says they don't have a shock for the 2 inch drop in the front. What shocks are you guys running with the drop keys and do they botton out like the stockers . The rears will be fine with the extenders . Thanks in advance, Mike.