b16a header question ....I have a b16a orignal top header no bottom, but have full 99 si header with
Weld in 2 o2 bungs and use it (though the flange might need to be rotated).
Or convert to obd1.
Option 1 is cheaper
Option 2 is what you'll end up doing in the long run.
Or convert to obd1.
Option 1 is cheaper
Option 2 is what you'll end up doing in the long run.
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