That i do not know as I'm in the same boat at you are, year wise. I have the "ultra" clearance one but i can measure it when I'm home to see if it equates to the 1" drop
Thinking about all this again I'd had to space my skid down like 1/2" so might have to think about the 2" drop kid instead. I'll go out and measure my stuff again. And it's interesting that the 4 cyl skid is cheaper than the 6 cyl skid. Guess I should message them to see what is different between the 3.