These were on my car when I bought it and lowered the car about 40mm (top of tyre even with top of guard). I believe they are Pedders Sportsrider springs. They gave a firm but comfortable ride when paired up with my Koni adjustables. I swapped them out for some Dobinsons because I needed to go up by about 10mm to clear my drivway. Would be a good match for the rears for sale by mhoff25 here: http://www.aus300zx.com/forum/showthread.php?t=293242
