Thrush - the woodpecker
I remember 44 years ago, when i got my 57, the car had a pair of long Thrush glasspacks on the original 283 power pack motor. Remember the thrush wood pecker?
Later I installed a complete exhaust with the blue Walker Continental glass pack mufflers. I was happy with the sound of both, but both are long gone now.
Currently I have 2.5 ram horns and the muffler shop's "turbro" mufflers on the car and while not glass packs, they sound good to me---but my ears ring all the time now and I have a hard time hearing what my wife or any soft voiced female says