The dropped lower control arms are the fabricated arms that Mid America sold. The have a 3 inch pocket. BRE sells the same control arm. They are pricey but nicely made. The middle pair of photos in the 1st post show the pocketed lower arms with cut springs (One coil cut out) The lower two photos in the 1st post are with the stock springs, pocketed lower arms and 2 inch dropped spindles. Those lower pocketed arms with 2 inch dropped spindles yeild about a 4-1/2 to 5 inch drop in the front.

I'm not sure if the Van lower control arms are pocketed quite as deep as the fabricated lower control arms as I've never had a set of those.