Sometimes headers companies "dimple" the headers to have clearance for hte spark plugs
V v10sport · Built Not Bought Joined Jul 13, 2003 · 1,861 Posts #5 · May 14, 2005 View full thread Sometimes headers companies "dimple" the headers to have clearance for hte spark plugs
V v10sport · Built Not Bought Joined Jul 13, 2003 · 1,861 Posts #7 · May 15, 2005 View full thread I believe mine had an indentation. it didnt protrude into the primary tube.