72vet, as far as I know adjustable rods do not do anything more than the standard bracket with the offset bolt. I am not familiar with Eckler's kit but I suspect it is supplied from Vette Brakes & Products. [some of the bits I have bought from Ecklers originated from Corvette America?]. The VB&P unit has a revised bracket off the diff that allows vertical rather than horizontal adjustment of the strut rod. The adjustable strut rod then allows camber adjustment to suit the vertical position. The position of the strut rod [vertically] determines the change in camber over the suspension travel. I have bought this unit from VB&P for my restoration project; but unfortunately at this stage not on the road, so cannot tell you of any benefits. But I can tell you, so far, I have not had anything from VB&P on how to set it up properly! When I asked for detailed set up information, they offered to supply "square" washers to lock the vertical adjustment in the "stock" position. When I get my project "powered" and "rolling" I hope to find a "wheel aligner" that knows their "s&%t"!!!