Lloyd who runs this company has a Big Block replica (like me), got fed up with the leaky brass Ford items so has commissioned a set of stainless header tanks to the original shape, but with reduced height, to suit a Cobra replica. Price is about the same as OEM. He is also working on an adaptor for Ford small blocks.
More here if interested:
https://www.oespecplus.com/
If website says 'Sold Out' contact Lloyd directly via the website.