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parts interchange

  1. 6.5L Diesel Engine
    How interchangeable are the different GM-4,5,6,8,etc... turbo parts? I have three: a 95, an 97, and another with no "GM_" number. I polished up the compressor housing on the one missing the tag wanting to put it on the 1997, but it has a slightly different shape. CHRA's look basically the same...