Hello, Joe2011,
here are two Pictures of an Exhaust System with DPF.
- open the Hood
- Then move to the left (which is the right Side from our Truck)
- and look in
You should see this with a DPF:
A little bit nearer
The big Pot in the Exhaust System is the DPF.
I assume, that without DPF there will only be a Tube.