Well for the s13 I heard that they are good coilovers but for the s14 I heard that they are not. When they first came out everyone was complaining about the rear coilover for the s14. You couldn't get them to adjust low enough. And I'm not talking slammed low but low enough to get rid of some wheel gap. From what I remember it was like the coilover wasn't long enough for the s14 so you had to take it down past the last groves on the coilover. But they may have fixed that by now.