[bmw1racer]

Originally Posted by bmw1racer

There should be markings on the engine block somewhere indicating what engine model it is... I vaguely remember it being on the intake manifold side.

I found the ID label on the engine block: N52B30.

EDIT: Here's a VIN decoder that TheSt|G pointed out in another thread: http://www.bmwarchive.org/vin/bmw-vin-decoder.html