Dual in/Dual out muffler
my concern would be clearance. how thick is the muffler. much more than 4" and you'll lose alot of clearance.
not a big deal on a track car, but for the street it'd be bad.
other thing is whether having the X pipe farther back helps as much as it would up front. i've always heard there is power to be made by experimenting with crossover location.
don't know how true that is.
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