What should I keep? Ported?
 

Alright so I have parts here that can make 3 engines. LOL They are all supposed to be S4 13BT Parts. I know One set if definately a S4 13BT because it was the JDM engine I bought. I only want to keep 2 sets of everything. Meaning I need to get rid of 1 set. Looking at the ports exhaust and intake, some look different. I was told they weren't ported and all were stock but especially one set of exhaust ports seem larger. (Look at the Pics). I compared everything to my stock JDM S4 13BT and yeah some ports looked different just a little bit. I don't know if they are from a different series or what. Anyways I was just curious on what I should keep (refer to pics)...

Alright here are the housings... The last 2 pics compares stock ones (right) and the one set that I think is larger(left)

Here are some more stuff...

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