I also have an extra set of holes at the shackles. The hole centers would be two inches lower. I am riding a couple inches nose high, after the recent purchase of a new truck, with extra duty suspension.
I am thinking of using the lower holes, but wondering if it will actually give me a two inch lift, since their will be no height change at the equalizer?
I also would be interested to know what people use to adjust these settings? I am thinking of inserting a pry bar between spring and frame, to pull down to the next hole.
I hope I am not hijacking, but this info should be of interest to the OP as well.
Thanks for any thoughts,
Jerry