Funny you say that.. within 2 mins someone sent me a PM! I’m having SoLow air suspension but I don’t think you can take springs out and put bags on. Also they want a fresh install for warranty.I might swap out the rear B14 springs for the Eibach springs. They aren't easy to get hold of, and apparently the Eibach's come as standard on the new B14 comfort, but I might know where I can get a pair.
Your Solow's should sell pretty much straight away on here, loads of people waiting for them.