muffler(s) on a Slant Six?

It's no mopar, but my wife has a 4runner that had a Flowmaster on it when she got it. Goodness, the thing droned so badly at cruising speed that I had an otherwise perfectly operational muffler removed and scrapped. At best, it made the truck sound like it had a hole in the exhaust at idle.

I could never recommend Flowmaster to anyone. Just my 2 cents.