Doesn't really lower at all. Rear is softer somewhat. I might get flamed for this but I think eibach rear drag springs aren't much different from rear 4 cyl springs. I don't think you would want to waste the effort of a spring change on some 4cyl springs though.
I put them on after deleting a/c and changing to alum heads.It came down 3/4" to 1" in front,didn't change the back.I was looking to level the car,not lower.As far as ride I haven't noticed much of a difference with sway bar connected.I might cut 1/4 coil off to give the car a slight rake.I don't think changing the rear would lower it any,not much difference in weight back there.