I can take a look, I think I have some. Honestly the EchoUAT is about the size
of a deck of cards and I just screwed it to the end rib. The GPS is mounted with
a bracket I made which looks like Bruce Lina's GPS mount. The antenna simply
sticks out of the bottom of the wingtip. Currently I have copper tape strips as
a ground plane in the floor of the tip, but can't tell any difference over the first
antenna (the spider). There's a ton of room in the wingtip so it's a very simple
install.

I'll post pics if I find some.

Regards,
Jeff Hays