You will need an 02 sensor extender, but get the smallest one you can find. I actually haven't been able to make mine fit, and my 02 sensor is just hanging currently. No issues, but would like it on.

I will need to somehow find a saw and cut it maybe a quarter inch to make it fit. Tip, try putting it on first THEN putting on your rear manifold.

Alright. I just bought them. Would i also need a 02 sensor extension as well for them? And i'll probably get a new cold air intake after, so i'll likely get a tune up after i put both onto the vehicle.

Hey man. I was just wondering about the headers, the downpipe that comes with them can fit on stock exhaust right? I plan to buy just the headers first since the rest of the exhaust is pretty solid as it is (it has aftermarket mufflers)