Sorry for the confusion, not a actual double DIN head unit, just a double DIN touch screen (Theres a lilliput one quite cheap on ebay) - i won't have a headunit at all - just two touch screens, so i want to route the sound through from the PC to the amp directly.. so i guess i'm asking what connections the standard amp and speakers have.. do the differ from standard ones? - I don't really want to swap out the speakers immediately, as i was hoping to do the install in stages, but i think i will defently have to swap the amp? Without actually seeing the current audio setup on a car its hard.. i'm a planning freak and want to know what i'm getting myself into by buying a 350Z! - And if i start buying the bits now, it won't be so noticable on my wallet!