They are HKS Drag Coilovers to suit a GTT-R34 not sure of spring rates but 6-front and 4 Rear but could be less 5 FR 3 RR.......as they they were pretty much used for dragging but drove very well on the road as they were much softer than most coilovers out there..... as I also had a set of JIC's that were like rock hard and was like travelling on bump stops if you know what I mean! would not go there and would'nt recomend it but these are very comfortable for street driving.......they come with the C spanners and allen keys required to make adjustments probably lucky to do 1000klms probably closer to 5-600 k's anyway there in excellent condition no leaks....and waiting to be sold..........
I am Pretty certain that they wont fit , they will only fit R34GTT , R33GTR and R34GTR.................... But you can always ask one of the guru's on the forum