you use them 180deg around so basically it would adjust for positive camber used like this in a s13.

some people machine the top plate to get more adjsutment from them in a 1200. also i had to lightly file the dags on my strut holes in the car to install them. Only because the bolts had a bigger od then the stock bolts.

apart from that no mods. i didnt machine mine at all, and with late ute ball joints get almost neg 1deg (i adjusted mine for camber and castor though).

with stanza ball joints i get an extra deg of neg camber easy.