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  1. Transmission - Rearend
    I just started a full restoration on a 86 c10 I picked up. I pulled the trans out today cause I wanted to put a b&m shift trans kit in it. But I'm not sure if its a 350 or 350c. The one thing I did notice is there is a HD mark on the top of the case. Can anyone help or tell me what to look for.
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