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Wilwood's Locknut
1986-1993 GM 4
2007-2008 Pontiac Grand Prix
15/16 in Mounting Hole
500 in H Square Ports
Doug's Full Length Headers - 1.625 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - Various Applications 11000403 Wilwood's LocknutProduct Description: Headers Full Length 1. 625 in Primary 3 in Collector Steel Metallic Ceramic Small Block Chevy Various Applications Dougs Headers, the most respected name in the header industry since the 60s, began in 1958 as a small muffler shop in East Los Angeles, California. Every Dougs header comes with all the necessary mounting hardware, collector reducers or connector pipes, premium gaskets and detailed installation instruction sheets. Our
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