Time to upgrade the zorst. Rekon I'll DIY it. has anyone used or heard about these systems http://www.ebay.com.au/itm/Nissan-Patrol-GU-3-0L-Wagon-2000-2008-3-Exhaust-System-Stainless-Hi-Flow-Cat-/141659882780?hash=item20fb96451c
They sound good Aussie made and 5yr warranty
Edit: 2007 DX 3.0 CRD