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Single - 4" Turbo-Back System - Ultra Flo™ Welded Muffler
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2003-1999 Ford F-250 Super Duty 7.3 Liter V8 - Automatic Trans., 137.0", 142.0", 156.0", 158.0", 172.0" Wheelbase, Turbo Back System; 2003-1999 Ford F-350 Super Duty 7.3 Liter V8 - Automatic Trans., 137.0", 142.0", 156.0", 158.0", 172.0" Wheelbase