All the other instructions are in Japanese and aren't actually specific to the G/Z.
Here's the chart w/specs off of Aragosta's page. Note the Z34 (370Z) recommended height is different so you may have to mess with rear shock length a bit unless yours is true-type in the rear and not OEM/seperate spring style. The front spring rate is also listed at 14K vs 12 for the G37 (CKV36 chassis designation on that chart). I know you can get them with true-type coilers in the rear as well as a either a solid pillow ball or rubber upper mount. I have the rubber uppers but the steering response is still as sharp as a high-powered laser. Turn-in is pretty instant.
