I bought everything that GC has for the E30. I love it all except for the MS swaybar links. The links require welding a bracket on to the strut. This weld becomes a weakest link in the suspension.(mine broke) Sway bar is stiff enuf with the standard endlinks. Also, jay at ground control is way off on spring rates. he suggests 650# rear and 550# front. Everyone that I talk to uses 450# all the way around. The entire Ground Control package was $1600