Let me clarify my initial post. My 2010 3.8 has what appears at a casual glance to have a dead pedal, in that there is a rectangular rubber tread on the left side of the driver's floor. But it is completely non-functional for me, because when I adjust my seat and steering
wheel for a comfortable driving position, and sit with both my legs equally extended, a comfortable distance apart, and my right foot on the accelerator pedal, my left foot does not reach its supposed "pedal".
There are 3 problems:
1) My left heel is almost an inch from the "pedal".
2) The angle at which the "pedal" is set is much different from the accelerator pedal's angle. I have to bend your toes quite a bit forward to be able to rest your whole foot on the "pedal". Thus my two feet are not cocked at the same angle, which is wearisome over time as I would have to strain to put my left foot down all the way.
3) The "pedal" is too far to the left. Also, even if I strain to put my whole foot on it, only a little bit of my heel can touch the "pedal" when the toe of my shoe is up against the sidewall, since I am not pigeon-toed (and don't want to become so by twisting my foot).
Summary: When I'm in normal comfortable driving position, if I want to put my whole left foot on what the Genesis provides as a dead pedal, then:
A) My left heel is forward of my right heel, meaning the left leg is bent less than my right leg;
B) My left foot is angled significantly more forward than my right foot;
C) My left foot is twisted in a pigeon-toed direction.
I believe the only way for me to deal with this is to make a plate the left side of which can be screwed to the Genesis tread, and the right side of which holds an alternate tread set at both the same distance from the seat, and the same angle as, the accelerator pedal. I'll see if this is feasible and post more.