I just got my unorthodox racing crank pulley from fellow the370z.com forum friend CJBinder. Thanks man!
I busted out my scale and the stock crank puley weighs 2146 grams.
The UR pulley weighs 460 grams.
Now if you want to compare apples to apples... The stock pulley weighs five apples (one half eatin) and 3 cans of beer (because I ran out of apples)
The Unorthodox Racing pulley weighs about two apples