Flatheads are quiet motors, so Smithy's or Brockmans are fine I bought the long ones. I have Brockmans. They sound beautiful.
I put Brockmans on my 56-292 Y block. I called and spoke to Mr. Brockman and he informed me that Y blocks are are very loud motors and advised me to buy the longest muffler they make. I did that and and the car sounded terrible. I then swapped to 30" Smithys, they are a little better, but still have a rapping sound. If you have a standard
shift you can play around with the RPM and get up to speed without making a spectacle of your self. With a ford-o-matic you have to get on the gas to move into traffic. A Y-block is a long stroke motor and is simply too loud for me. Here I am 1 year later planning on installing Walker Quiet tone mufflers. I've been all over Y-tube trying to hear a set of Walkers, no luck. I guess no one has ever used them.
Nothing sounds better than a Y-block with smithy's at idle, but when you stand on it, they become nauseaous.
My 2c
