Anything based off of the M54 architecture is going to be good stuff. Motors aren't the issue with BMWs, outside of bearing clearance/oiling issues on the S motors.
With some very notable exceptions (2J, 26DETT, 38DETT, 4G63) the JDM motors are glass.
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E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII
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