2" coil spacers.
i think on the front, a 2" = a 3" lift. but you will also need to make mods to the strut length.
i started off with 1", but its an addiction, always want to get More power, always want to go higher, and always want to get bigger.
i have 2" lifted coils in the rear with the original 1" coil spacer. still waiting to make an "A" arm spacer.
but to be safe, 1.5" should be ok.