your motor has the Catalytic convertor in the manifold up top. you have 2 options:

1) Buy an aftermarket header, aftermarket cat, extend the o2 wires, get a custom exhaust

2) leave the factor header and cat and just run the exhaust from the bottom piece.

#1 is obviously more expensive. Our exhausts run $350 WITH a muffler, Cat is $100, pick up a header for $80-100 from NOPI