Which trucks have it?
 

The 3rd injection anyway? Do the 2004.5 on up have the third injection or is it only with the 6.7L engines for the particulate filter?

What exactly is the 3rd injection for?

I'm looking at a 2005.5 (02/05 manufacture date) and wondering about it. Now from what I understand, this one should have the updated intercooler not the plastic one I hear about, is that correct?

It does have the G56, which was not what I was looking for but those NV5600's are like finding a needle in a hay stack (at least with descent mileage on them).

Thanks,
Craig

04.5 have it, from what I understand, it quiets the engine down a lot. Probably more efficient, too. I don't know about 6.7's...

This is a good thread to start with, there are some more...

https://www.dieseltruckresource.com/...&highlight=EGR