Torque Arm, RCB, and PHB
That being said....
I have stock right height, but I do have adjustable Spohn rod/poly PHB and LCAs. They allow for the adjustment of the rear axle in all horizontal directions (left, right, forward back, diagonally). My rear was a bit off with the stock parts and is all straight now with the adjustables (adjusted by the mechanic during an alignment...you have to ask for it and may need to convince them to do it).
https://ls1tech.com/forums/suspension-brakes/469879-lca-s-panhard.html
https://ls1tech.com/forums/suspension-brakes/473481-panhard-pictures.html
https://ls1tech.com/forums/suspension-brakes/476806-adjustable-lcas.html
https://ls1tech.com/forums/suspension-brakes/478148-what-gain.html
I dont know much about adjustable Tourque Arm. I think its for adjusting the pinion angle.





