Another view on my back. My shirt was already dirty so what the hell!!!
So you may be noticing there is no header. You would be correct. It is not required. I do like keeping the OE cat at this point. Should you chose to buy an aftermarket header. It will bolt right up in the same way with out modification. Thus far this kit is 100% zero cutting involved. From the front all the way to the back.
I've also setup at this time as well for a larger turbo

A little grinder is needed for some clearance and that will bring the HP potential north of 700hp

Obviously lots of other modifications would be required. This basic setup will supply up to 350hp worth of airflow.
Keep in mind this does not mean you can make 350hp. Sorry the engine is most likely not going to like that.