did our trucks come with fms headers

And the stock headers suck..They crimp down terribly right outside the port.. A true 1.5 or 1 5/8 flow a ton better than the stock crimped headers...
 
Nope they aren't FMS headers... They are just rinky dink headers that FoMoCo uses. Mustangs have basically the same style of headers, and I know that when I went to real FMS stainless shorties that the quality was 110% better, with no kinks...
 
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