OK, here we are - the final "All Black" (apologies to the New Zealand Rugby team) version of my homemade CAI:
I compressed the bellows pretty much to give it some room to expand under engine torque and not pull the tube out of the fender wall. I noticed that earlier, when I had slid the bellows down the tube farther, it had pulled the tube out about 1/2 inch after a hard acceleration (because the engine twists away from the fender wall in this state).
Another view:
It's a fairly neat assembly, and even though the airflow curve is not as "smooth" as I'd like, I think it directs the flow fairly well.
- Jack