408w swap: Trying to ID these headers

Picked up a Stroker recently in a private sale. The seller couldn’t remember exactly but thought the headers may be hookers. I’ve searched everywhere and can’t confirm. Hoping someone here may know. They could be 5-8 yrs old based on some other parts receipts from the build. TIA
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Yes, they’re coated inside. And does not really matter at the end of the day but knowing may help with planning k-member and cowl. I’d like the smallest cowl I can get away with (2”) and read in a recent post that some headers (MAC I think) don’t fit with aftermarket k-members. Just trying to minimize downtime once starting the swap is all. Thanks