From my experience, the flowmaster tail pipes do not fit very well and require tweaking. Their mufflers drone too much for my taste. I prefer the sound of Magnaflows or the Pypes mufflers. JMHO
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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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