[289ACE]

I have what I believe is an original hood scoop that I am planning on using on my car. When I went to talk to a potential painter about painting my car he said we might have a problem with the hood scoop moving around and scratching the paint and has suggested using a thin rubber gasket around the perimeter of the scoop. When I look at the pictures of the original scoops it looks they were molded in pretty well with the finished hood (ie no seam) so I am wondering how they were assembled on the orginal cars. In particular I am wondering if body filler was used on the edges, or if something else was done. The scoop I have is the style where the front lower portion is about 3/4" forward of the top and it is attached at the rear with 4 rivets/screws and then there is a scoop insert which screws to the hood and the scoop rivets/screws to it. The paint guy said if body filler is used on the edges, it will probably crack at some point, so I am looking for other solutions. Perhaps Shelby was never concerned about cracks so they just used filler and figured they would have bigger cracks/dents to deal with before they had a problem with the scoop. FWIW, My car is aluminum, but the scoop seems to be some other non ferrous material and here is a not so good picture, but you can get the idea.
TIA,
Jay