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so basically the point of an al. D/S is it has less wieght so it can turnout better horses?
Yes.

I believe the aftermarket driveshafts also handle more horsepower than the stock unit.

Definitely on my wish list. Hey, it'll help your mpg too!
 

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so basically the point of an al. D/S is it has less wieght so it can turnout better horses?
It's back to that "parasitic loss" thing again. Imagine rotating a 1/2" thick, solid steel bar, that was five feet long, by holding it in your hand, like a propeller, and then make it spin as fast as you can.

Now swap that steel bar for a broom handle (minus the broom) and think how much faster you could rotate it? Lighter is easier to turn.

However.... lighter is also more expensive.

Lighter and stronger? Even more expensive.

Lighter, stronger and faster? $$$
 

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are you guys saying they're some what similar to UDP, they 'free' horsepower???
 

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