you need a cai for the motor you are putting in
aem for the b18c1 is kinda hard to fit in but it'll work.


as for the exhaust i believe it'll be short (won't reach the exhaust piping or stock cat from the header.

when i did my swap i bought a gsr cat along with the header, and i was about 4 inches away, and greddy sold this one piece that was the exact size needed to bolt it all together.

anyways.... i'd just plan on getting some new exhaust piping done after the swap... easiest way to do it I'd say.