New Mufflers for Fun
A Body; my pal said you may have a bit of slight drone, even with four cats. His words were "The Super Turbo mufflers in 17491 do have a little drone, but we don't get
many complaints about the sound."
So, take that as pretty much from the horse's mouth. If you need no resonation/drone, might need to go with more stockers.
Sorry!
tom