You do not need a cross over in our car. It's not needed and there is very very little difference between the sound, unless you have an O/R H. I would keep the stock 2.25 piping. Dumps right after the muffler are most likely illegal so watch out. Oh, and don't idle in one place for too long. Emissions include carbon monoxide.
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170 rwhp/201 torque
2000 Mustang 3.8 V6
Divorced Duals - Thrush Welded Series Mufflers - 3'' tips
Hurst short throw shifter
FRPP T-Lok + 4.10s
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