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Contrary to popular belief, the ZL2 cowl-induction hood was not standard issue with the LS6 454. Sure, the domed Super Sport hood was included on every Z15 (SS454) and Z25 (SS396) Chevelle, but you paid an extra $147.45 to get the special air cleaner and under-hood ducting to make it all functional. Underneath, this four-speed 454 monster still packs a 12-bolt rear axle and F41 front and rear sway bars. If it is an LS6, that Muncie is an M22 “rock crusher.” The odds of this being an actual LS6 car are about even with the chances it packs the more mundane LS5. That said, the difference in value is much greater—like 300 percent higher for the LS6.