I put B12's on my Golf last July. Great red quality in a sporty kinda way, handled great. But I was also always disappointed with how much it didn't lower the car so if I was to do it again I would get the kit with red springs.
I have the b12 sportline kit fitted to my mine. It's much better than the standard suspensions which had had 74k on them when they where changed. It does lower the front a bit more though than the back
Pretty sure the springs determine the height.Will sit the same as a GTI on Eibach pro kit
Bilstein B12 sportline kit (17" monza's)