Ive used them quite a bit on toyotas without having to make any modifications to the struts aside from changing the bolts themselves. With the extreme amount of negative camber needed for this type of fitment, every bit of adjustment helps
EDIT:
the eccentric bolts ive used before are more of this style with the lobe being on the bolt itself and not the bolt head.
thats the style i was looking for but i couldnt find any pics.