i used the search function, but couldn't find a clear explanantion. i just picked up a cheap header for my ek hb. i need help understanding what i need to do for the lower o2 sensor since there is no hole for it. i wanted to know what else i need to get so the check engine light doesn't stay on.

 

A header with two o2 sensor bungs. You can get one welded in at a muffler shop.

 

X2..just go to napa and buy an "o2 sensor bung" they are generic. Then go to a muffler shop and have them weld it in. Only end up being a few bucks.

 

where is the sensor bung welded to? if it goes on the end of the header, will it mount up correctly to the stock exhaust? thanks for the help guys.