I think if you drop the car 2", you will still need C/C plates.
I lowered my car about 1", and the alignment shop was only able to get the suspension back within the very edge of the allowable range. With a 2" drop and no C/C plates, you won't be anywhere near the factory specs for caster or camber, and you'll have some major handling problems, as well as extreme tire wear on the fronts.
If you really want a full 2" drop, you'll need to do it right and get C/C plates. Think twice before going that low, unless it's going to be mostly a show car. Even with a 1" drop, I have to creep over speed bumps to avoid smashing my Y-pipe, and the approach angle (to turn up a sloped driveway) is already about as low as I'd like.