Shifter Kart hand controls

I have just been searching online, I think small bicycle brake levers like these attached to the backside of my shifter kart's steering wheel would work well to let me control the throttle and brake cables with my hands while steering.

August 1 update on shifter kart

Quick update to my kart, here are some of the parts that I need:

http://www.southwestkarters.com/wp-content/uploads/2009/08/rearbrembo.jpg