Do all 98-02 Camaro Z28's have aluminum drive shafts? I want put one in my 96 SS because I have a bad driveline vibration around 105+ MPH.

they should, you can tell by knockin on it with your knuckle. as far as your vibration, you should find a shop that can balance it for ya. the aluminum one might do the same thing, and might even do it worse, ya never know.