Steel flange (not steel) for the head of 12mm thickness (suitable to become 10mm after relative flattening and not like the classic that is available commercially from 10 that becomes 8mm causing sfiatamenti)
Using this you can build the manifold flange or at least realize masks for special applications.
Steel flange to make the exhaust manifold for Fiat - Alfa - Lancia 1.400 16v engines both aspirated and turbo like Fiat 500 Abarth for the construction of the exhaust manifold