Well, not much has changed in 20 years. There's basically two choices, chambered like a flow master..which tend to drone, OR straight thru like a magnaflow or a glasspack and they tend to be raspy. There are variants of both, but overall, they are pretty similar.
The latest twist that I've seen is what our
senior mad mechanic (
madmike1157 )did, and incorporate them both to eliminate the drone..
See that kids? That's called giving credit where it's due...