Red Hot Headers!!!

[StreetRacin89Stang]

I came home tonnight and i was listening to the engine in the garage and the opener light went out so i was in the dark and i noticed that my cars headers where glowing red! i could also see the sparks going through the wires to the plugs and the plugs lighting up! I know that the header thing is not normal. My timing may be off since i have recently removed the distributor. What might cause this, and is it bad??

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89 5.0 GT White w/Blue Racing Stripes
K&N, 73mm Mass Air, Ported and Polished Stock Heads, E303 Cam, MAC equal Length Headers, Off Road H-Pipe, Borla Mufflers, Sway Bars, Strut Tower Brace, Subframe Connectors, Eibach Springs, Koni Adjustables/Reds, Pony 5 Stars, 1000 Watt JL Audio System, No P/S , No Smog Pump