Extreme Duty 4" Exhaust DPF Adaptor Kit - 79 Series (2016 - On)What Makes This Kit Great More Power & Grunt: Not only does this kit improve the vehicles power and fuel economy, but it also gives a deeper, more aggressive sound thats sure to turn heads. Fits the Kit: This DPF Delete was designed to fit our 4 Extreme Duty Exhaust kits, the Single TLX441540 PO Australian Made: Its safe to say that folks that need a DPF delete are putting the vehicle through some hard yakka, it's only fitting that our Aussie Made