3.5 inch or 4 inch lift
If only a lift kit is being installed, then 3.5 is the way to go. If you are going to change the pitman arm,extend the brake lines, re-hang the muffler, and possiably remount the radiator,add a body lift, then go for the 4" lift. Yes you can put the 4" lift in, but without swabar disconnect pins, and proper suspension geometry, you will be unsafe on the road. To you and others. Be smart, be safe, Be A PRO!
it depends on what size tires u wanta run i got 32s in mine and a 3.5 inch lift and it still rubs a bit if i turn to sharp if u wanta run 31 3.5 is the was to go and about the other guy sayin something about a body lift last time i looked grand cherokees are made with a unibody so u cant put a body lift in it just thought id throw that one out there
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