Ford Lightning 1999-2004 Long SystemFord Lightning enthusiasts, if you've been waiting for big tube headers to handle the brute power you're producing, American Racing Headers has answered the call. 100% U. S. made using the finest 304 S S, the ARH Lightning system is available as a direct bolt in to your existing cat back or as a full 3" system with X pipe, custom mufflers and polished S S tips. Primary sizes are 1 3 4" (for street strip) or 1 7 8" (for high boost race applications).