Aluminum driveshaft

[Mikester]

Going back to post #1, either/or will be fine for a DD car. If it sees track duty, then score! If it's just daily driven, leave it stock. The point as mentioned is to lighten the driveline, which enables quicker accel/decel. Additionally, there is less power lost due to the fact that the hanger bearing & rubber dampner aren't there- meaning slightly more linear torque/power transfer to the wheels.

Aluminum/CS shafts will sometimes make a 'hum' due to balancing... However, don't ask me why but it works- Driveshaft Shops website says if it's too noisy, to jack up the car an rotate the shaft 180*; then re-secure it to the diff. Guess what? I'll be damned it actually works lol...

You won't notice anything out of the ordinary. As a matter of fact, I doubt you'd even be able to tell the difference

[Matej]

Originally Posted by Mikester

You won't notice anything out of the ordinary. As a matter of fact, I doubt you'd even be able to tell the difference

On the contrary, on a stock KA, an aluminum driveshaft and a lighter flywheel were my two favorite mods. Perhaps I just convinced myself of this, but I thought they made the car even more enjoyable than when I had a T25 on it prior to going back to NA. Nor did I experience any driveability issues.
In my opinion it provides more fun for the money than an exhaust or an intake or any other typical 'power' mod.