Looks like fun.
Any chance you could post a pic under dash showing exactly where you have attached the pedal box? I was looking at that recently and it looked like a PITA to get the pedals where I want them with location of steering column. I didn't have a pedal box to physically offer up though.
From the pics it looks like a big gap between brake pedal and accelerator pedal. Is that why you have the side tab on the accel pedal? How does it go with heel/toe?