Dave, Here is a link to an old thread that has pictures of ductwork.
https://improvedtouring.com...t=22163&page=2

I don't have Katmans's pictures on this machine so I will post them up tomorrow along with Parrish's set up.

Mike, shoot me a pm with your email. I want to talk with you about the ducts you have built. I need an alternative to the caliper hat that I currently have.