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If it's a black plastic manifold that def sounds stock to me. i have a 99 z28 and mine is black plastic as well.
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'99 Camaro z28 M6 Rear Mount T67, FMIC, 317 Heads, EPP FI Cam, 60lbs Injectors, Walbro 255 Pump, LS7 Lifters, Patriot Dual Gold Springs, MT ET Streets, BMR SFC, BMR Springs, AGX KYB Struts
560rwhp/589rwtq @ 10psi + Meth |
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