Can you post a picture of what they look like. I have available the exhaust manifolds from a 1986 345 that had the 454 in it. They look almost like headers, definitely not cast iron and have air injection ports.
Brad
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Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
When I bought my AS in WA state, it didn't have those. I couldn't smog it in CA until they got installed. I went to a BAR certified mechanic who took it upon himself to find all the necessary parts from recyclers and the like. It cost almost $2000 for the complete project, but the BAR inspector at the local JC said it was the best post factory mechanical job he had ever seen, it was so clean an installation.
Junk yards have those parts.
__________________ 2000 Ford E-350 Super Duty 418ci/6.8L Triton V10 21’ Chinook Concourse XL
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