?
please explain ?
the setup and term 4 link ( has 4 separate connections )is a common upgrade for a radius arm truck
and the panhard AKA trac bar your suggesting is already part of the OEM suspension
not sure I would even mess with a 3 link since it mimics a stock radius arm ( actually I am sure I wouldn't mess with them since I had
my choice )
The term 3 link and 4 link are used very loosely on this site I've noticed... He is referring to a dual triangulated 4 link which does not use a trac bar to center the axle the links themselves actually center the axle. Also hydraulic steering must be used on a dual triangulated 4 link as a gearbox/drag link setup will bind up.
A 3 link is nothing like a radius arm setup either. Radius arms only use 2 attachment points at the frame and provide little to no tuning capabilitys the ALA some companies offer are still just a radius arm setup they just offer a caster adjustment, which is better than the stock radius arms but is still not a 3 link like I see people on here call them.
Radius arms are notorious for wheel hope so when going to a 3 or 4 link it usually eliminates that issue if the geometry is correct.