NI downpipe and evo 02 housing any modding needed??

[AL92]

I have an n1 downpipe.Do I have to do any modding to make evo 02 housing work or should I just go with a ported 2g housing.
And is it even worth bothering to port evo exhaust manifold and evo 02 housing since they are much bigger than 2g exhaust and o2 housings.

Planning on running evo 16g turbo.

 

[Patter$on]

i got the evo turbo evo o2 housing and n1 downpipe and it bolted up the mesh twists a bit but not enough to ever have to change it