I'm interested in this possibly do a write up on how easy it is to install? Do you plan on doing the installation yourself?
You asked for it and I just finished this up. I ended up getting the pedals on Thursday and dove right in with about an hour of light left in the day. I was able to get the accelerator and brake pedals finished in about 40 minutes and when I got to the footrest, when I took off the plastic pedal I couldn't figure out how to get the metal door off that the plastic pedal snaps on to, so instead of starting something and possibly screwing it up I stopped. Since I wouldn't be able to get back to it until today, that gave me time to research and think things through. I ended up using the actual plastic pedal and attached the aluminum pedal to it with the given screws and it is solid without any movement. I had to drimel off the ends of the screws because they were just long enough to go through the carpet while hitting the metal door, which it rattled metal on metal. As for the accelerator and brake pedals, the aluminum pedals are about an 1/8in bigger all around.
Brake Pedal: I started by taking off the rubber brake pedal cover, using masking tape to cover the exposed metal pedal, centering and holding them on by hand, and using a sharp pencil in the chosen holes to mark on the masking tape where I would approximately drill holes. I then looked at the pencil marks on the masking tape making sure they were symmetrical around the brake pedal. Once satisfied with where the holes would go, I used an "Automatic Center Punch" to dimple under the pencil marks on the masking tape. The brake pedal is an extremely strong steel plate so using a cordless drill won't cut it, you must use an electric drill with preferably newer/new drill bits starting with an 1/8in and then a 7/32in. Attaching the screws and backings(washer and 8mm nylon insert nut) was simple, just be sure to have a small 1/4in ratchet with an 8mm socket or a small 8mm ratchet wrench to tighten the nylon insert nut from behind.
Accelerator pedal: I used the same method with the masking tape for the accelerator pedal. It is important once you are ready to drill into the plastic accelerator pedal to use the 1/8in drill bit that the "Ultimate Pedals" instructions tells you to use. I initially used for the first chosen hole a 3/32in bit but quickly found out that trying to turn the given mounting screw was way to hard and had a hard time backing it out, once backed out I went with the 1/8in bit and all 4 mounting screws went much easier and tightened perfectly.
The picture below doesn't give it justice, as the look is way better in person once finished and sitting in the driver seat. The actual pedals are quite impressive and were obviously perfectly CNC machine cut. I'm also glad I went with the shiny anti-slip instead of the frosted anti-slip pedal. The anti-slip is by no means sharp to the touch, but feel like roughed up metal where my shoes/sandels/bare foot will not slip off of if wet as it has been raining the last two days so I'm satisfied safety-wise.