Diff drop lowers the diff and changes the cv shaft angle
This is a Diff drop bracket, balljoint spacers, and low profile bumpstops
(2x diff drop brackets, 2x balljoint spacers, 2x bump stops - ignore the other 2 diff drop brackets and the tie rods)

Dropped IFS lift kit lowers the entire Independent front suspension- A-arms and all, cv shaft stays stock standard angle
This is a Dropped IFS lift kit:


