hey all, dont hate me for asking, i know the subject has been done to death on the forums.
S13 suspension into RA23's and AE86's.

i wanted to know,

apparently s13 strut tops fit RA23's standard strut? so (because they are more available and cheaper) i can use an S13 adjustable camber top on my RA23's standard front strut, with the only mod being slightly filing the 3 mounting holes? or am i mislead?

my other query was regarding sigma lower control arms into AE86's, its a straight bolt in affair right? so the same would go for RA23's?
again, sorry to ask this. just after some clarity.
cheers
James