The difference is the six has a way higher dispacement. I believe some ford inline sixers have a 300 cubic inch displacement. That is only 2 less than their 5.0 L V8. An ecotec, I think, has only 134 CID. Big difference. I used the magnaflow muffler, and personally think its too loud for my taste. And that is using the stock resonator. Later I want to use a really long resonator to quieter down a little. If I were you, I wouldnt run without a reso. But thats just me.
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Cleared corners-RF P1 Subs- RF 201S Amp- Memphis Audio 4x6's and 6x9's-JVC Arsenal KD-APD89 Head Unit-front and rear z-spec strut tower brace- KYB GR2 struts- Intrax Springs- Magnaflow Muffler
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