Need help ID'n SBC heads by casting #

Scubado

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OK gang, new to the forum here and need some help. Bought a set of old SBC heads locally advertised as mid 80's 350 heads. Took them to local machine shop that specializes in heads, owner said he believes they are 2 bbl 307 heads. Contacted guy I bought them from, and he argued me down saying the casting #s come back to a mid 80's 350 and it was "verified by several other people." Casting #s APPEAR to be 14078267, but I cannot find those casting numbers ANYWHERE. Tried to post pics but server said pics are too large.
 
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