>
>   I concur with Paul that the header tank is one of the better ways to go.  I have a 235/320 Lyc combination with 15 gal wing  and  12 gal header tanks.  The two Facet pumps fill 2/3 gal/min into the header while the engine is at cruise power settings.  A sight gauge on the header and sight Polyurathane tubing off the discharge of the Facet Pumps show when the wings are empty..KISS principles.. Has worked for me for 15 years ..so far.. Regards Don SKeele N320J