Yes, and yes. I have an uncut harness and a PCM out of an 02 Avalanche. Going to have the harness cut down and simplified. A friend of mine owns a shop and can handle the tuning.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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