If you guys like the Hipermax III, wait untill you try the new HKS Hipermax IV GT. I just did a 1100 mile roadtrip in 4 days in my R33 from NL to Birmingham and back. Absolutely love my new Hipermax IV GT. Ideal fast road + mild track suspension. With the rubber topmounts, it's really quiet aswell.
HKS just lowered their retail prices also.
Here is a picture of the set before i installed it on my car;
Currently even available with discount on our website:
Hipermax MAX4GT Nissan Skyline - PartBox Performance and Tuning Parts