i got a stock gsr header for my swap and i noticed that it didnt have a place to put the o2 sensor in like my old dc header from my d series engine did.what do i do?do i just let the o2 sensor hang out loose?do i take it to a muffler shop and have them weld it?where do they weld it?my other question is will a 2.5 gsr catalytic converter work fine with my header seeing as it is a gsr header?and fit under my hatch?thanks everyone for their help!

 

anyone?

 

i dont think you have a stock header then,maybe you got a mismatched header and downpipe i dunno

 

gsr's have the the o2 sensor on the cat not the exhaust maniflod....if you leave your o2 hangings your car wont run right.