Chuck,
I use the smaller one, and zip tie both ends. I use medium tygon fuel line. I use one filter on the fill line, and one on the vent. I use the dubro felt clunks in the tank, similar to one T.O.M listed from walbro... just smaller.
http://www3.towerhobbies.com/cgi-bin...?&I=LXFU76&P=7
Dennis