Lee, thanks for those images! I always assumed the radiator top cover was aluminum but your steel piece could ONLY be oem
Is that insulation material thinner than the 'normal' Goose bitumen/felt (~10mm?).
Also interesting to see the upholstery material that was used on that panel.....clearly that 'soft' woven fabric that is also found (for one example) on the underside of the Mangusta glove box. Fwiw the exact same material was used on some early/mid 70s Ferraris but I it's hard to track down exactly. I've heard it described as "woven felt" - - a material that does actually exist, but seems very uncommon these days. I bought a piece several years back which was a 'leftover' at a large felt company in PA. It has the same feel but not the same obvious woven pattern.
It looks like the same woven material was glued at least to the rear bulkhead part of the trunk on 8MA1046 (your photo I believe). I found the same material on 1010's large bottom trunk panel, underneath a different layer of fabric. So on some cars (1XXX at least) this might have been the stock trunk upholstery material, although it doesn't seem to have held up very well against time!
