Td04 are they all the same??

[Bigsi15]

Hi guys
After discussion with a few members regarding hunting a downpipe it seems the opinion is that finding one for an angle flange will be easier than a straight one.
My question is this, are all td04 turbos the same when it comes o the hot side?? I have a 20t with a straight flange but could I swap it out for something say from a 16t from a s60t5 to gain that angled exit or do they vary in size like the compressor side??

Thanks!