David

Very simple you should use a pleated paper filter pickup and make sure that it will swing from side to side without getting hung up. Locate the pump as near to the tank as you can and preferably use one or 2 tanks. The more tanks you use the better the chances of an air leak. The yellow Tygon supplied with Chinese models can very hard, don't use it. 'Proper' Tygon can be very flexible and cause problems with the heavy clunk being hung up at the front. I now use a short length of brass pipe and 2 lengths of Tygon inside the tank so this does not happen. I fit the tanks so they are propped up at the front slightly so when taxiing and flying at low speed for landing the clunk sits in the fuel. If you have more than one tank you can get away with just having a pleated paper filter in the tank the pump draws from, but I usually put pleated filters in all tanks.
In my experience header tanks are completely unnecessary and just add weight and more junctions that can leak. I tried one before going to the filter in the large tank.

They are available nor from GBR-jet

http://www.gbr-jet.com/catalog/produ...44vk6q8qqme577

John