Hi Luis
I have a set of progressive springs from my E3 that I used prior to the coil overs. I would be happy to send them out and let you try them on for size. If you like them, I'm sure we can come up with a very reasonable agreement. If you don't like them, just send them back.
I believe they are B&G progressive springs. I have the set for the rear as well (for use with Bilstein) that I am not using.
If I were not running the coilover springs, I would still be using these on the stock setup. The ride is very comfortable with no noticeable harshness and they lower the car just a bit. I can send pics from when I had those on the car and measurements to fender lips from floor (though wheel/tire dependent).
Drew