Hemidenny K member club?

[ame="http://www.youtube.com/watch?v=O1bXPNy1Yn4"]Header Theory Dyno Test - YouTube[/ame]

On this 600 hp engine, 50 hp loss going from long to short tube. Leaning to the long tubes.

Also of note, header temp comparison, 200 F with ceramic coated, to about 800 for uncoated. No power difference but huge underhood temp difference. Coated for me.