Thanks AKADriver, that seems to make sense, although why didn't Nisan make the 95-96 ABS and non-ABS the same. Damn engineers...By the way, I had no intention of ordering from them, just using it to show the price difference (I've seen price differences at other places too just not quite so much).
I guess I was just asking the question to straighten it out in my head

I can get "new" Z32 30mm aluminum OEM Nissan Reman loaded calipers for $75 a piece from my work so I'm just going the 300ZX route.
Anyone have any idea on the wheel studs?