I have a set of used Tanabe DF210 lowering springs for the S14. I used them for about 6-7 months last year and they have about 7k on them.
They are about the same as Eibach Sportlines as far as the ride height and quality goes. Also, they are progressive…
Here’s the link from the manufacturer: http://www.tanabe-usa.com/springs/df210.asp
I’ll post pics later on.
$150 obo.