RaisedByWolves
FRIEND
Tx
First off, if you are calculating fuel load to include header tanks, ya might want to reconsider.
That being said, I like the headerless system. But, as pointed out above, it needs to be installed correctly. That means correct vent lines, fuel caps, selector, and front AND rear ports on the right tank. If it's done halfway, bad stuff will happen. I've heard of fuel starvation incidents but it was generally traced down to no front port installed on the right tank, or incorrect caps/vent lines that lead to a vacuum in one tank or other.
Web
I'm re doing a headerless install. they routed the lines how they seemed fit, and even used a cessna fuel selector. It's a nightmare