Bob,
Sounds like the tanks Dubb offers are replacements, and not in addtion to, correct? (I originally thought they were set up like a "hopper" tank in a DF) If so, they sound like a great option. My only concern would be the 12" length of fuel line to keep the tank at the CG. Do you think medium size line could still be utilized, or larger line to pressure the tank as Angel did?
I guess another option would be to install the tank a little closer to the motor. My Magnum was like that, and the flying characteristics as the fuel run out was not that noticeable.
Gary
edit> to correct some of my bad grammer....
