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Discussion Starter #1
I ordered the 4-2-1 ceramic header for my b16a (99-00 civic si part #) Are the o2 sensors going to be in the correct locations? I realize I might have to weld in another bung for the 2nd o2, with the o2's are in the back, like factory, right? Thanks, Ryan
 

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Discussion Starter #2
I ment,
"but" the o2's are in the back, like factory, right? Thanks, Ryan
 
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