Need Help with Springs?

I just purchased a 2000 Honda Civic Si and I am looking at lowering it. I just purchased a set of Eibach Sportline Springs for it which will give it a 1.6 drop all the way around. The question that I have is has anyone used the same springs and if so did they need a alignment kit? I have lowered many cars before and have not had to do this of course none of them were hondas so that makes a difference. Any information would help! Thanks!