I have purchased 28 carbon fiber parts for my Supra and have verified that they are all real carbon fiber. It is easy to determine if a part is real carbon fiber or not.
These are very excellent quality. I have a pair in red. I note that these are anodized aluminum and the finish quality is outstanding. The stock pieces are quite trashy looking.
It is not too difficult. NV has a video of the install procedure. Basically it is just loosening or removing bolts and taking off the metal cover before replacing with the cf cover. I did find that I had to remove the four or five bolts that hold the top of the bumper when it meets the...
I think that the spoiler should match the rest of the trim on the car. A cf spoiler looks odd unless the exterior rear diffuser etc have been change to cf.