What's your budget? Ridetech has a very good system. The Hotchkis TVS system is also a very good street driver setup for a lower budget. If you can spend more, check out
www.speedtechperformance.com and look at their complete bolt on sub frame and torque bar system. Great system and has had really good success on the track. Or they have some really good control arm/shock packages if you don't want the whole subframe.