Let me simplify for you since Im a 5th gen owner. All you need is H&R Sport Springs with Koni Yellow. ENough said there the best for Prelude that and if you really want to splurge...go with Ground Control Coilover mated with the Koni Yellow thats already done set for track and street. Countless numbers of Ludes out there use those setups...thought RS*R supposedly has their spring almost feeling like H&R but more smoother and handles great.