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  1. 325 ZHP build thread **warning...lots of pics**

    General E46 Forum
    alright guys, i thought i'd share a project me and a few other fanatics worked on over the past few weeks. i came across a used m54b30 motor on craigslist. it had 92k miles and the owner had simply bought a new motor because his head was warped and the head gasket was no longer sealing. on top...