The Edge,
Wow, nice job on the bipe. I'm not sure if I like your XKE or your bipe better!
Funny thing, My D.C. Ultimate has a short cowl too. And it doesn't have the ring to mount it with either. But it does hang down below the bottom of the fuse about 1/4" to let air escape.
I got this on a trade, so it's been around the block a few times.
It does have hard points for the flying wires on the tail. There is a built up plate that glues to the bottom wing to finish off the bottom of the fuse. But probably the coolest thing is how he made the rear of the fuselage contoured. It really looks nice.
I looked at my top wing mount and it looks like the rear cabane screws on at about 6" from the front tip of the wing.
Phillco,
Best of luck wished I could have been more help.
Scott