I have a set of HKS Hipermax Performer coilovers made for S14 chassis for sale. Coilovers are in good shape. None of the shocks are leaking and/or blown. The spring rates are 6kg for the fronts and 4kg for the rears. These coilovers ride SUPER smooth and go pretty damn low. Mileage on coilovers is unknown because I bought them used although they seem to have fairly low miles judging by the condition. My friend has the same set of coilovers on his S14 and can give you a ride if you are interested in seeing what they feel like. Price is set at $900 USD. Shipping costs will be the buyer's responsibility if applicable.
Not my video, just gives background information on these coilovers.