suspension?
 

The panhard rod/bar is a single piece right? But if you look at the rear sus. setup, there is another bar connected to the stocker, then up to the undercarriage. What is that? The "upper panhard rod"? And why have i never seen a aftermarket one of those?

I think Granatelli makes one.

i'd say because it really doesn't do much other than anchor the phb. it doesn't move.

i can't imagine you'd notice ANYTHING from a replacement...if anything just beef it up yourself and save some money