I have been checking into this. Its mind boggling with all the spring options.
I have bilsteins all around with the eibach springs. I want to continue using the bilsteins. The later model (87 -95) springs will work in an earlier model car if
you use the bilsteins. The front springs are shorter in the later model cars.
Malcolm, I am interested in your S4 springs if they are still available.
can you let me know what you are asking for them?
Thanks
Brian