Header manufacturer help
The headers in question are Blackjack headers, 3000 series with a 5 yr. warranty, produced in the early 1980's. 1 5/8" primaries with a 3" collector. They fit 67-81 Camaros, 68-74 Novas, 64-77 Chevelles, & 65-76 Passenger (big car). Don.
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