Ground Control Sleeves and Koni Yellows is a proven competition suspension system. Affordable too. Don't waste money on Skunk2s, GC's are around $300 and you can get koni yellows for $500. Sure it doesn't have the 1000xxxx degrees of adjustability compared to full coilovers but they're cheaper (and work just as well). You can also order custom spring rates and have your konis resleeved for higher springrates.

If you got tha $$$ you might want to check out the Zeal B6 system in addition to the Teins.

Shingo