This has been the best combo we've see on the Nissan 300ZX.

Eibach Pro Kit Lowering Springs.

These Eibach springs are made from the finest chrome-silicon steel, which is heat tempered, shot-peened, and preset for sag resistance. The finish process of powder coating creates a durable and attractive surface. A lifetime warranty against defects is included with each spring set purchased. The Drop for the 300ZX is .8" all around.

KYB AGX Sport Adjustable Shocks

KYB AGX Shocks allow drivers to adjust dampening to match specific driving conditions quickly. The AGX Sport Adjustable Shocks and Struts have manual four way front and eight way rear adjustable dampening which makes it completely on-the-car adjustable within minutes. With its competition grade engineering and construction, AGX Sport Adjustable Shocks and Struts are perfect for sport enthusiasts and high performance drivers. These sets work for both Turbo and Non-Turbo Zs. Front Shocks are 4 way Adjustable, and the Rears are 8 way Adjustable. Adjustment is done by opening the hood for the front, and reaching behind the rear wheels for the rear.