That's the problem. Did display the casting numbers on the "carb'd ford forum", no one knew. Only the E6SE heads identifyed. That's why I've posted the photos. Try this one
http://www.sweb.cz/xcitrusm/pages/Sn%EDmek%20047.htm
BTW, yes, I'm from Czech Republic. Starting to build cobras 427. The first one is here
http://www.sweb.cz/xcitrusm/pages/Sn%EDmek%20042.htm
another three waiting
http://www.sweb.cz/xcitrusm/pages/Sn%EDmek%20065.htm