hello i have 3 friends with the 5.7 they started with flow masters they said it was bad sounding in 4th gear they had a vibraition issue one went with the borla he loves it the other 2 went with the magnaflow they are happy with theres the system that i went with is for the 5.7 it was the only mandrel bent system i could get at that time i got my exhaust 2 weeks after i got the car i love the way it sounds
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