Best sounding muffler for 5.3?

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I have a 2019 Tahoe 5.3 with a 2.9l whipple, corsa long tube headers, and the Chevy performance borla catback. I’m pretty happy with how my current exhaust setup sounds especially at WOT. I just feel the idle with the borla mufflers is a little quieter than I would like. I don’t want anything crazy loud and obnoxious as it is my daily. I just want something that has a nice deep v8 tone which the current borlas I have are lacking.
 

B-train

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I have been a fan of Flowmaster over the years. The last one was on a 96 k1500 with the 5.0L. It was a 40 series I believe. I haven't tried one on a LS motor however. I have used mafnaflow, but has droning issues. When they changed the firing order on the LS motors, it seems harder to find a muffler that gives a nice rumble. I think as long as you get a muffler that has a balance pipe built in, the drone isn't an issue.
 

tom3

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Run straight pipes. The cat. converters make pretty decent mufflers and larger diameter pipes make for a pretty good sound. Guys (young guys) do that with trucks around here.
 

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