Hooker has a crossflow muffler as well. Its what I would call a hyrbid in that it is kind of like a chambered(read Flowmaster) at idle but more like a glass pack(read as Borla/magnaflow) under load. My wife had one on a 3.4 Firebird and it sounded really nice. Hooker calls it a chambered muffler but if you look at the internals they are not quite the same as FM...very unique. No drone to speak of either.
Hooker aerochamber
http://www.summitracing.com/parts/HOK-21721HKR/?rtype=10
Hooker aerochamber
http://www.summitracing.com/parts/HOK-21721HKR/?rtype=10
