If you want to keep exhaust cost down i would forgo the cut-outs. Kind of overkill for the power you are after, unless you just want the ability to be loud as hell lol.
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Not needed, but that sound is great. Any idea how to replicate it without doing the cutouts then?
On a stock engine I don't really see any gains but if your purely after the sound just yank the band clamps off the y pipe and run open headers?