I had that Streetline kit on my Rivage. I got it from ECP about 5 years ago, it had the Bilstein shocks but the springs were called Ventura (apparently they also made springs for Eibach
). It was a decent kit for the money (dropped about 40mm too) as it was only about £150 at the time, but the only thing I will say is that although not overly harsh when driving around, if you hit a pot hole it felt like you had cracked the suspension as it felt like a right old whack.