Oh, let me tell you...DO IT! I have 04 vert and lowering it only improves looks, and handling, despite what others say. GM allows up to 15mm of adj.... hence, ADJUSTABLE SUSPENSION!!! I have RIDE CONTROL suspension, and it's yes... even more comfortable on "touring" mode. It is so easy, you'll probably be like me and think, "Why was I making such a big deal of this?" You don't even have to take wheels off to loosen nuts on stock bolts. You'll need a 13/16 socket and 18mm wrench for back, and 10mm combination wrench for fronts. As soon as you jack it up, leaf unloads pressure so you can make adjustments. At first (rear), I only took half the avail. threads, set it down, and realized it wasn't squat. So, I jacked her back up, and loosened till she bottoms out, where snap ring is to keep from ever removing too far

Anyways, the car is flatter in corners, and does look better. I'll post pics in the next couple days about it ok? I love this car, and just looking at this engineering marvel underneath is a pleasure every owner needs to experience. Anyways, I installed different LOW beam headlamps, went to West Coast Corvettes (online) and paid 34 bucks each.. but... theyre 80Watts instead of silverstars 55Watts, so the lite is Zenon and brighter than hell! Not been flashed once either, in case you're concerned about that
Steve