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Using out-of-the-box Shoenfeld headers, the guys were quite happy with the results. Time permitting, they would have liked to see how smaller 15/8 to 13/4 stepped headers would have performed against these monsters. As is customary with the street theme of the Engine Masters Challenge, the engine ran through a set of mufflers. MagnaFlow seemed to be the muffler of choice among competitors as they were on almost every engine at the ’10 Challenge.