A 4" drop is a big deal, in fact it's classic! Yea maybe the 5" drop is the big one, but while your cruising down the road who's can see the difference? That extra inch is more cost and less ground clearance and you just don't want to go there! This Calmax Lower Control Arm replaces the factory arm and serves up a 4" drop right out of the box. It's all you have to do, no wheel & tire issues, no alignment issues, install and go.