Up for sale is a like new, excellent condition VooDoo Magnum Ti shift knob. I had this installed in my G37 and absolutely loved it. The knob is countersunk and drops things down about a inch compared to the factory shifter. The weight is a nice touch and makes shifting even more enjoyable.
Knob fits 350z, 370z, G35, and G37. More details available here.
Team Voodoo shift knobs
$125 (includes PP and shipping to the lower 48)
PM if interested.