Here you go. My memory is wrong though the truck was on the ground. As seen in this article.
The panhard bar locates the axle side to side(de dion axle, in this case). Because one side is attached to the frame, and the other to the axle, it causes the axle to shift to one side relative to the rest of the vehicle as it goes through its range of motion. So ideally, you want the panhard bar as close to level as possible at ride height to minimize that movement.
I'll bet it'll still handle better than a solid axle on leaf springs with no additional lateral link, the way most small trucks were, haha.
While lateral movement is pretty good. I'm looking to better control the roll center. With it angled like the picture it moves vertically and laterally during roll. Getting the bar level minimizes that and would make it more stable in transitions and at higher speeds. Is there a huge difference? Not really, but it is still better than stock.
The more you lift it the more that angle changes. If you lift it enough, you would want to address the angle of the bar. As that angle gets worse you'll start notice more sideways movements over bumps, a difference in right vs left hand turns.
I'm curious how the control arm angles will end up at -2", stock, and +2"
