Lightened Driveshaft

Enjuku Racing now has a racing driveshaft that weighs 11lbs.
I was wondering if anyone had any infomation on the weight difference of this part compared to stock.
And what kind of HP this would free up?

Thanks

i cant really say how much the stock drive shaft weighs but i know it is heavey is hell.a lighter drive shaft lets the tranny spin easyer and if the tranny can spin more freely then the eingen dose not have such a strain on it. anthore thing to boost then hores, if you have ac and dont really need it get rid of it and that cluch fan can go. replace it with electric fans and a bigger radiator that can help out some as well.