tclederman wrote this in a old post,
I had original-style mufflers on my 261 with Fentonns and dual Rochester Offenhauser (1954 Chevy pickup). The original-style truck mufflers are straight-through with side baffles. They sounded nice enough for police to stop me and compliment me on the sound (after they saw that the mufflers were legal).
how did you like the sound of that setup?