In around 2006 I had a chance to photograph the Sonauto 914-6 GT and found two different type mesh material installed in this car; the typical lightweight aluminum expanded mesh https://pbase.com/9146gt/image/25727740 at the front half leading edge of the engine bay lid and the standard street 914 mild-steel mesh https://pbase.com/image/22265231 covering the rear section. See here https://pbase.com/9146gt/image/25650210