As I understand it, the 2" drop can cause clearance issues with some wheels. The tall spindle alters the suspension movement similar to the Guildstrand mod, but works by raising the ball joint height instead of relocating the upper control arm mounting location. While some vendors offer a taller spindle, the only ones I have seen offered also feature the 2 " drop. I would be interested to know of any tall spindles available without the 2" drop.