There are many options.1) Springs & Shocks. Expensive but works well. Koni Yellow shocks with Eibech springs. read up on spring rates. This is what track racers like to use. However there's no height adjustment on this set up. I've also used the Tokico Illuminas before. They are cheaper and work great ... but they don't last as long as the Koni's.2) Coilover Sleeves. This is relatively inexpensive, but most don't work. I think Skunk2 is one of the few that makes a coilover sleeve that works, but this only gives up height adjustment. You'll still need option 1 above to make it handle.3) Complete Coilovers - racing shock & spring with height adjustment. Some I've tried and can vouch for:Skunk 2 Pro C - racing series, great for track, not comfortable for street use. Inexpensive but works great.Tein Flex - expensive, not as good as Skunk2 but very close.