WTF kind of brakes do I have?

[Neejay]

Ok...I got some brakes from a front clip (still had brake pads with the split). Rotors were waaay larger than my non-abs rotors, calipers seemed to be larger. When I got to the auto parts store, I always have to get ABS brake pads even though I dont have ABS. I had to get my rotors turned to the min. thickness and the guy recommended that I didnt put the rotors back on the car. So when I got new rotors recently I got ABS rotors, since I have to get ABS pads right? Wrong. The ABS rotors are STILL smaller than the rotors I currently have on the car. Put them on the car with the caliper and they were just too small to account for the caliper. The rotors are already 4-lug, not drilled so obviously these are OEM on some 240sx (180sx/silvia?)

Are they altima rotors here in the US?:









Also, it looks as if the amount of contact that the pad is touching is about the same size as the new ABS rotor. Should the pad contact be closer to the center of the old rotor? (see the ring of "rust" closer to the center of the rotor):



Damn Im confused