If you wrap them, they will get hotter than they ever have before. I dont see any benefit, they cost enough as it is. Airflow is what cools them, the O2 will get plenty hot enough.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize.
1977 Trans Am W72 400, TH350, 3.23 T Top
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Bill Nye.
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