Where can i found lighter hood than the stock aluminium ???

 

I'd think the hoods from Rotary Extreme, VIS or Seibon would be lighter. How much exactly I don't know.
www.rotaryextreme.com
www.seibon.com

 

For the amount of money it cost (1200+), to shed around 3lbs of weight (if I remember), I don't think weight should be the sole puporse of buying a CF hood (assuming it's a real one). A vented hood as a primary reason is a good idea though.

 

www.atihun.com