true duals...maybe??

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so right now i have a 14" magnaflow on with everything else left intact, it sounds good and all but im yearning for more performance. my dad has a dual in dual out cherrybomb vortex he doesn't want so im thinking of getting it installed and giving him the magnaflow. but is the performance difference worth the $ 200 for an install , id also like to get rid of the resonators off the end, mds is not an issue cause i just put it in manual mode. btw i really like cherrybomb so im not worried bout trading. truck is an 11 RC/SB hemi.