Sorry I don't have any sound clips of mine (it's not running atm), but I have 40 series Flows dumped right in front of the rear axle. IMO, if you're gonna do a lot of driving in it, don't use the 40's
or dump it. I think it sounds awesome, but I get lots of in-cab resonance. Gotta raise your voice to talk, and forget about using your cell phone! (probably shouldn't do that anyway

If I had dynomat or similar, it probably wouldn't be as bad. When I finally get her back on the road, I'm probably at least going to reroute to in front of the back tires and out to the sides.... Just my .02!
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I'm a little

and a lot
Ground beef: A cow with no legs.
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'66 Chevy SWB "Penny"
'67 Chevy Big Window SWB- aka
"Pearl"
'72 Burb- "Betty"
"It's not a hearse dammit"
'99 Chevy Ext. cab Silverado