I'm running a 91 dakota sport 4x4, 318 pre-mag with mopar headers.The dumps
were created by boring into the inlet of the cat, welding pipe into it,
which comes down and splits into separate pipes left and right sides of the
truck with cap'd ends (quick removal) fwd of rear wheels. Horsepower gain
approx 10, quicker times on drag strip open, than closed exhaust.
Jim Knox
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