Looking around the forums I see some discussion and modifications of the pulleys which sounds all well and good, but by changing it to a light weight pulley how unbalanced does the engine become? If the engine wasn't very well balanced to begin with, and then you throw a much lighter pulley on it, that's just asking for trouble and longevity issues. So in short does anyone know how balanced the Z engine really is?
ps. Yes I definitely meant to type "how WELL balanced is the 370z's engine?" as the title for all you english geeks out there