update....lol
z4, E60 535xi and 535 no go on CP or DPs.
the n54 CP can work but you may just have to shorten it and do a custom coupler....but its not like a straightforward swap
its worth holding onto that and the FMIC (but again the OEM one is likley larger then the ETS) and seeing if you can get them to work
you could always gut your downpipes lol
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