X2
There was a write-up somewhere about using the older (Later 90's?) w-body adjustable turnbuckle style lower control arms on our cars. They replaced all four arms and so were able to adj. camber and toe in the rear. Can't find it though....
Suppose the bolts would work too as long as the tire does not contact the struts/spring perches
http://www.gaownersclub.com/forum/showthread.php?t=125775&highlight=rear+control+arm s
Found it...the link to the other website this came from is dead, but there might be enough info here