Your motor runs on a pressurized fuel system, the planes you see with the clamps are the newer DZ series motors. they use a pump to suck fuel from the tank and are prone to flooding between flights. You wont need a clamp or shut off valve.

Here is a link on one way to plumb the tank. http://nsrca.us/index.php/all/engines_fuel/76-fueldots Run the fuel dots out the side of the airplane for easy access for refueling and "burping" the tank after a flight. (relieving pressure)

Plumbing for the motor; the pressure nipple is the middle of the three brass fittings on the front of the motor, run fuel tubing from there to the check valve then on to the tank vent. Make sure the check valve is installed so air can pass from the motor to the tank! Connect the tank clunk line through the fuel filter to the other fitting on the front of the motor. The third fitting more to the side of the engine goes to the carb.

Hope this helps.

Dale