Hey, Wayne. Check out my cobra website
http://members.home.com/superhart/cobra.htm. Scroll to the bottom of the page and you will see what I am doing for fresh air vents. The vent assemblies will be mounted on top of the footboxes but will be pretty well out of site tucked up under the fender above the side louvers. The units are not mounted as yet but I have photos posted of the vent assemblies so you can see what I am doing. If I had purchased Cobra Restorers parts I would have spent nearly $550. My total outlay thus far is around $50. I know I am using 2 1/2" duct rather than 3 1/4" like Cobra Restorers but you would be surprised at how much air a 2 1/2" duct can flow.