truck sways and wanders over road

[lowrollin70gmc]

What year is the truck?

There is never a need for three stabilizers, you're only covering up a real problem. One problem is those leaf spring bushings, there should be no space between the bushing, spring, and hanger. I often need to use a dead blow hammer to install springs with poly bushings into their mounts. You can either get the correct bushings/springs or spacers to take up the gap between the bushing and mount.

Your draglink also goes up from the pitman arm to steering arm, it should be parallel to the ground at ride height. It looks like you have both a dropped pitman arm and a raised steering arm; at 6 inches you shouldn't need both.