Hey bb,
i was talking about the factory suspension link, u know the link that your traction rod replaces.
If you buy 2x whiteline rear camber kits then u can fit one to both ends of this link and it affects camber more than anything else. I know because i have played around massively with my rear camber on the aligning machine and thats how u adjust it, just adjusting the bush on the link that your shock goes thru wont give u much change to the neg rear camber. You need to shorten both links to get more negative camber in the rear(per side), again the whiteline kit does this by adding an adjustable bush to one or both ends of the factory "traction rod"
Also having castor in the rear sounds odd to me, i really dont think u would want to be pulling the rear wheels towards the front of the car.
I think the japs have called it a traction rod to give it some cute name, when really camber is the main thing apart from toe, that gives u traction in the rear. So really a better name would be camber rod.
Wheres the old SK when u need him