Yes I know that is a 2-bbl bracket, and yes I know I need to change it. It worked for now until I make another Mancini order.
I couldn't find a photo of the full install but it comes with a gadget for the end of the cable and a ball. Bolt the ball to the carb linkage, and plug the gadget/cable on the ball. The firewall end has a fitting similar to the one clamped in the bracket. You space it out so it doesn't hit the pedal inside, and thread a nut on it to hold it in place. The deal comes with a cable, or you can just use straight bike parts from Wal-Mart if you mess up cutting it or want to use it on something different.