Isn't there only one style of manifold that looks like that (1989-1995), HO or not? Unlike the original (1987-1988) header-looking manifold.
*edit* just found that the HO manifolds have a larger plenum volume versus the standard-output engines.
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
Last edited by Cliff8928 : 01-03-2007 at 02:08 AM.
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