It sits over the entire cat ... and goes up the pipe a little towards the collector ... there's like foam padding under it that burns away after time and it rattles.

Had it done on my AUII ute ... it rattle so loud when the aircon came on ... and when it idled at a certain RPM and underload as well.

Carline mufflers removed it for me for free with the oxy

definately on the weekend. they can fix the exhaust leak as well. Thanks mate