I had a serious flashback the other day: I was backing out the drive, and heard a rumble in the air, but couldn't put my finger on just what it was, or where it was coming from. Since we live near an airport, I sort of thought "old radial engined plane", of which there are several flying in and out. But, there was something about the sound that really got my brain to working, and just about the time it started to dawn on me, I saw a 29-30-31 Model A roadster pass down the street, with the unmistakable growl of a flattie and straight gear tranny. I went that direction to see where the guy went, and he lives just three doors down the stret, said he had just gotten the car running after a two year resto, and didn't have any mufflers on it so it was sort of loud. I thought it was great, and didn't need any mufflering. I have seen him around the local neighborhood several times since, and that car still growls just like it should.