My solution to this was to make brackets from a piece of aluminum lintel such as a bricklayer might use over a window or door opening. The brackets are attached using the same bolts as connect the cowl box to the valences (inner wings). No modifications to the car itself are required and the brackets never contact any part of the wings or cowl.
Go very slowly in cutting this material as its very hard on the saw. Use a new blade and a bit of cutting oil.
The pictures tell the story. Hope this helps, Warren