New trucks don't sound like old cars - why?

@paulclark you should look up @toolmanmike, he has a recording of his Dart with a very nice single exhaust and great sound. I believe he had a link to a friends dart with duels he showed me, if I remember correctly.
But as far as modern vs muscle engines go, I'm also biased to the raw horsepower they were going for and what can be done today is pretty fantastic.