I have the C springs currently and I needed CC plates as well as a bumpsteer kit to correct my alignment...
It is different with every car. From what I have seen though I am one of the few people who have had too much trouble with the C springs. That is why I decided to go with a much lower spring in the future. lol
The C springs are a nice compromise, they give you a noticeably lower stance but do not give to harsh of a ride either. I think they are one of best choices for people who daily drive their car. Not to mention they are cheap and easy to put on.
