They are 2nd hand but have been rebuilt. I was going to use them front & rear. My stock shocks are on the way out so I thought I'd rather replace the stock suspension with coils. At least then I can adjust the height of my Stag to suit how I want it to sit.
My S13 had GAB Prosso Zeros which from memory were 10k front, 8k rear. Great for the track but bad for daily use around town. These seem definitely less stiff as those, but still better than the stock setup I have now.
Cheers for that, I wasn't sure where the CS's fit into the scheme of things. Thanks for that.