Going to potentially piss some people off, but I am going twin turbo LS. 6.0L, twin T4 flanged turbos in thr 60-66mm range, Holley Terminator X engine management. Got some sweet FSP stainless turbo logs.
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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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