CCOT sells the lift shackles, just a beefier shackle that takes the stock OEM spring. You can get them with greasable pins, already have the great zerk installed. Then just add the Bilsteins which have a slightly extended shaft which allows a lift between 0-2.5". Better than stock ride on the Bilsteins, utilizing the oem springs with a shackle lift. You just have to check spider angle to make sure it isn't binding, if so, add 2 or 3 degree shims under the spring/built, which will lift the face of the diff towards the center member.
Energy sells a full kit with all body bushings, new shock bushings, new spring eye hole bushings. It is a nice kit, runs about 150$ if you look around.