Recent content by Kevindevyn

  1. K

    how much horse power will the vortex dual outlet muffler give my 2.8 1988

    pontiac firebird? It not the cherry bomb just to let you know
  2. K

    what size exhaust does a stock 1988 pontiac firebird have?

    i think it has 2 1/4 in and out but im not sure.
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