The benefits of having extra shock absorbers is that any extreme force encountered is divided between the two shock absorbers for a more comfortable ride & using twin shocks is also beneficial when carrying loads (like a vip vindicator boat with a 235hp ford v8) as it improves the load carrying ability of the vehicle. Air schocks (shown in pic) gave the truck maximum lift when needed/desired & took pressure off of the sway-a-way "powerbarz" (yet i still managed to break a 2nd set...1st set was covered under warranty). & yes those are john baker upper control arms in the pic. In retrospect I should have never worked the truck as hard as I did...the current 1983 4wd prospector project will be the recipient of many parts from the 86 & will be my 2nd chance to respect the "mighty" truck.