Making the Decision:

With all of the exhausting research out of the way, I ordered the A.C.P.T. carbon fiber Driveshaft.

Now be advised, that each newly ordered one-piece Driveshaft is crafted after the order is placed.

I was told to expect three weeks for delivery.

The Driveshaft Arrives:

As you can imagine, I was eagerly anticipating the arrival of my beautiful, rare, lightweight, carbon fiber Driveshaft.

Three weeks finally passed, and then it arrived, on time as scheduled.
As I normally do, I inspected the box for signs of damage, but everything looked good. I opened the long cardboard box and
began pulling and thrashing away at the annoying, but I suppose necessary bubble wrap.

When I was finally finished, there it was… a very nice, made-to-order carbon fiber Driveshaft in my wondering hands.

The Driveshaft has menacing flat black yokes at each end and in the center is a thick resin-covered dark carbon fiber.
So dark and so thick, the only way to see the weaves of carbon fiber is to actually place the driveshaft in direct sunlight.

The Driveshaft was screaming to be installed on my STI.
I made plans with a friend at a local shop to complete the
installation. With the A.C.P.T. carbon fiber Driveshaft as my passenger, I made my way over to the service facility.

Installation Process:

We put my STi up on a lift and methodically planned the installation
procedure.

The mid-pipe section of the exhaust was removed first, followed by the
Driveshaft protection plate.
With this removed, we then unbolted the shaft and the center bearing. With all the bolts removed, we carefully slid the clumsy heavy steel two-piece Driveshaft out of the STi’s transmission.
Before the one-piece carbon fiber Driveshaft was installed we verified
the actual weights of the Driveshafts.
The factory Driveshaft weighed 24.5 lbs. and the A.C.P.T. one-piece shaft weighed 13.5 lbs.
We ended up with an 11 lb. savings through the center of the STi

We positioned the carbon fiber Driveshaft in its new home. After a
little bit of twisting and turning the Driveshaft was carefully massaged into the STi’s transmission.

We then bolted the new one-piece Driveshaft to the differential and installed the Driveshaft protection plate.
With the Driveshaft firmly in place we checked the clearances between the Driveshaft and the floorboard. All the clearances checked out okay.
The mid-pipe was finally reinstalled to complete the installation.

The A.C.P.T. carbon fiber one-piece Driveshaft is truly a bolt
on. No modifications to the floorboard or any other component are necessary for fitment. The total install took a whole twenty minutes.