Got in late, I'm beat. No pics tonite.
This belly pan/air chase is gonna be the ticket. I did take a few minutes to look under there and this is really the ideal way to go. My duct would be 26 inches wide and 5ft long and 2 inches thick. There is a perfect place right behind the front suspension/tie rods to open the front of the chase up into a mouth that could be 5-6 inches thick without it even being noticable. I can funnel the rear into two 3 inch PVC ducts.
I'm excited again, this idea rocks! Thanks everybody for the support and guidance!
It will take a week or so for me to gather up everything and start working on it... I will report back as it develops.