2" lift with 1.5 AAL?
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i just installed a 2.5" AS kit on a regular cab FX4 and the front is still about an inch lower than the rear. from what i notice, the rearend of the reg. cabs is much higher than ext. or screws. so in this case, adding a 1.5" AAL would put the truck back to being unlevel just as it is from the facotry, but a couple inches taller.
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