Gas and Brake Pedals

There was an ad at the top of the page for a company called SC Inserts. They had a pretty snazzy gas pedal that was fatter and extended further to the left so I can reach the brake more easily. Brake pedal to match. Does anyone know about these parts? Do they screw in somehow or are they double stick tape? If the latter, I'll empty my shopping basket. Also, how difficult is it to install a driver footrest on the left side?

These guys also carry the Ford Licensed Eleanor Grille.

Thanks all.