I'd thought that I'd start a thread that displays a picture of some of the goose guts out there.
Here's what I have on hand now, and more are on the way.
Top row, Left to Right: Shell Creek, Webfoot SR1, Webfoot SR5, Webfoot SR4
Bottom row, Left to Right: Flyway X, Flyway
Here's the easiest way to determine if the Keats guts are Flyway or Flyway X
If there are other guts out there, feel free to add to the post.