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    Exhaust Manifold Bolts - 69' Mercruiser 160 inline 6 250 cid

    Hello, I am new to boating and have a couple of quick questions in regards to the bolts that hold the manifold. I have two deteriorated nuts on each end of the manifold and having a tough time removing them. So here are my questions: 1) Are the bolts that hold the manifold double end threaded...
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