Gene,My hangar-mate developed the production version of this aluminum inlet backin the 1990's and sold it to James. http://www.romeolima.com/RV8/Cowl.htmAs you can see, it is captured by the upper and lower cowls and connected tothe plenum with sections of tire tube. The inside is an airfoil optimizedfor laminar flow. Steve Colwell --For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html