Dumb question: If I were to get a z24 spoiler and remove my base model spoiler, its a direct fit right? I wouldn't need the z24 trunk?
Yes. As long as your going base to a 00-02 wing, your fine. The ecotec wings don't have as many mounting points.

M62, 42's, ZZP 3", ZZP S3 H/E
214whp 190wtq
yea the since the base 00-02 spoilers are the older 95-99 z24spoilers.