• Big Block Chevy 396-454
  • 1968-1981 /2 & 3/4 Ton 4WD
  • Blazer/Jimmy: 1968-1987 2WD & 1973-1981 4WD
  • Suburban: 1973-1981 4WD & 1973-1991 2WD
  • 1-3/4" Primary, 3" Collector, 2.5" Reducers 
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