No I have a stroked 383/479ci-6bbl 3" mandrel tubing & H-pipe with Flowmasters Delta 50 Series Race Mufflers, with full 3" tailpipes out the rear... I love the sound, had them on almost all my street/strip cars, since 1974ish & mine doesn't seem all that bad, some people complain about a drone, I don't really notice it, my engine makes allot of engine noise, roller cam & roller rockers, ported eddy heads, 6bbl, etc. blah blah blah... So it's par for the course, I don't have these cars for a daily driver or to have it sound like a stocker either, IMO why build a engine & muffle it to death, just my way of thinking... If you use too big of a pipe &/or no X or H pipe installed correctly, especially with-out headers, you'll get a drone/resonance way too much moisture in the pipes too, resulting in rotting the mufflers or pipe pre-maturely sometimes too... Depends on what size engine, what mods, how much power, you may only need a 2.250" pipe, like the stock exhaust had, in a 68-69 RR Charger etc., with Hemi Turbo Mufflers & if you have headers or a few improvements, you could step-up to a 2.50" pipe & muffler, if you have a stroker, good heads, big cam/carb etc. or making 550+hp you may want a bigger pipe like a 3" pipe & mufflers... Allot people, that don't know any better, blame the drone on the wrong thing usually... my $0.02 cents
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I had a set of Dyno-Max mufflers on another car, they were ok, sounded kind of tinny, not throaty, if know what I mean...