
Get this out of the way right now.... I'm just echoing what the UNIVERSE already knows...
A 50 series Flow Master sounds the best on anything, even UR MOM.
Ok, that's out of the way

I like the sound, it's not the best performing muffler out there but it's got the sound. Straight through packed mufflers, to me, sound like a finely tuned tuba while I'm looking more for Animal on the drums.
I've had a 50 series on my 4.3 S10. Dual 2.5" 50s on 5.3 '68. Single 3" on Bender. I like it

I would love to get the sound my '68 had with dual 50s and an H pipe. God that truck sounded good. I doubt the 400sbc would sing the same but I don't mind trying on Plank, my Nova, however I'm worried about the drone inside that car. Might get annoying, quick. Granted, I'm not sure if these mufflers HAVE drone. 2 where under truck beds and Bender... well... it's got lots of other noises and no doors. What drone?
Plank is as quiet as the Kardashians and as sealed as the Titanic. No carpet or weather strip. Is there another choice for dual 2.5" mufflers that has the Animal sound but without any drone?
Also, a resonator helps a lot with drone. Like a huge packed one (or 2). I don't know how much it takes the fangs out of the tone.