I want to give my mom's 05 Tahoe a better look. I already have a set of 20" LTZ wheels on it, but I want to lower the rear a little so it looks better. The problem is my dad is against lowering but I'm pretty sure I can get away with leveling it out. (He was also against the idea of 20s, but now he admits I was right and they look great.) Anyway, I found a set of the 3" Eibach rear lowering springs (3887.520). Do they actually drop a true 3" or is it a little more/less? I would like to leave the front alone (mainly because I don't want to align it again) if possible but I don't know if the 3" springs will be too much.