Wishbone?

Here is an over the top and complete over kill of a wish bone. I only do this when I have a lot of lift and need to keep the drive shaft aligned. A true and properly installed triangulated 4-link is the best for a straight axle. The caster changes to your advantage whenever off-set to one side or the other by helping your tire wear and increasing your turn radius. Every straight axle luxry car(Lincoln) and high end suv made today that has enough room runs a triangulated 4-link on the rear.