#1 Stop Products offers a complete line of superior under the carb throttle controls. From our basic electric solenoid models to our sophisticated air operated Plenum-Adaptor Stop - we have a stop that fits your throttle control needs. Call our Tech Line 319-277-5290 5-9 PM Central Time and we will give you our recommendations on a stop that will best suit your needs. From World Champions in S/C to local bracket racers we know what it takes to put your in a winning combination! No "off the shelf" one stop fits all mentality here.