Think of the cowl induction hood scoops on the Corvettes and Chevelles.
You should upgrade to the super-size 2-speed turbo-diesel/diesel automatic radiator fan if you don't already have it. It's the one with the really big fan motor and 3 blades on the fan that have the larger diameter, and the largr diameter fan shroud. I have an extra TD fan & shroud for an A1, if that might be useful to you let me know and I'll make you a deal!