I don't have any pics but I have thier through the floor pedal and hooked up to a Holley Stealth ram injection system and it was quite easy to install. I had to get longer srews to mount the pedal because of the thickness of the carpet. Be sure to get the proper snips for cutting the cable or you will have a mess.
I am going to try and use the original gas pedal and lever system if at all possible and adapt the cabling to complete it. Not sure that will be feasible but will give it the old college try...
Here are a couple of pics I found of my Lokar hook up. One is of the underside of the aftermarket gas pedal, and the other is of where the Lokar gas and C4 kickdown cables hook up to the carb on my 302. (Dirty dirty motor at the time, shame) "EDIT" I should have mentioned , the main reason I went to an aftermarket pedal, was so I could relocate it a little further away from the brake pedal. I used to hit the gas sometimes when I hit the brake, if I was wearing work boots. So I never tried to fit it to the stock pedal.