I have a set of as new King Springs for a 164.
2 x Fronts KVFS-03
2 x Rear KVRS-01
Perfect Condition, They were fitted to my car to get it through engineering, I estimate they were fitted for about 15km
They are worth $400ish new so I reckon at a $200 they would be cheap, but I'm happy to hear your offers.
Ride height with them fitted