Thanks.
The duct will fully enclose the cooler.
The current idea is to capture high pressure air from the front and exit via the upper surface of the fender in a low pressure area. Approximately from the top of the tire, then forward 12." Outlet is a 12" x 9" APR extractor vent.
My first thought was make use of existing holes before cutting additional ones.
A lower inlet is a good idea, especially if it capitalizes on air caught by the splitter.
Like this (only had a pic of the 911 handy)
