I expect 5 to 7 years from my system, with a little care and some paint. I touch up the black paint on the pipes every summer. The inside out will happen in the mufflers, most likely it won't happen on the pipes. Surface rust is your main enemey here.
Just more maintenace than a 409SS system.
Marco Tatta
98.5 SE MTX, Duratec
EGR block, fog light
fix, custom shift boot, monsterflow intake, Ecotek valve
Quasi dual cardoctor exhaust.
Hacksaw short shift, Momo race "s" carbon knob, ghetto rear strut bar, 16 inch cougar wheels with 225/50/16 kumho 712s
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