there are 2 different types from what i can find
Nismo 260RS http://www.fantasycars.com/sedans/html/stageanis.html
Autech 260RS http://www.fantasycars.com/sedans/html/stagea.html
i have no idea if there is a "standard" 260rs
edit: yeah darrin is right! the nismo version is just a modified autech