Hey, so I'm planning on changing the struts and shocks on my 2009 BMW Z4 30i from adaptive to Bilstein B6. My adaptive struts have gone bad after just 35k miles, which is terrible and I do not want to spend over $2500 just on struts and shocks. I would like to know if I will be able to reuse the springs from the adaptive struts and to put it on the Bilstein B6 struts. Also, does anyone have any good websites or locations on where to buy these parts? I usually use Fcpeuro but the struts I need are sold out and no eta on restock. Thank you so much for the help!