Hey Matt
Gave the es pipe a try. Made up some of your couplers. You should of patented these! A lot lighter setup then teflon and clamps. Make good protection for the plug cap wire also.
The AGM header fits perfect. 20x10 Falcon carbon prop. Turned 75-7600 on the ground at about 27". Kind of hard to measure the header for length, I used the centerline.
I found it kind of peaky in the air, seemed to jump onto the pipe before reaching half throttle. More power than could possibly want. Actually found it hard to control for the style I want to fly.
I'm gonna lengthen it a couple inches and see what it does.