hey, when installing a jdm B16 into a CX eg....do you need to get a different cat as well? I plan on gettin a World Sport, and my friend said to order the one for a Si hatch, since the cx one wont bolt up. Can anyone clarify what i'll need? I'm tryin to order the stuff needed soon to get this out of the way. So far for the swap, i know i'll need a throttle cable, radiator hoses..and....??

oh and the swap is from HMO, full changeover Si-R II.