DLeno, Joe pretty well summed it up, but looking back, no one has said why we provide the kit in the first place. Let me see if I can clarify it for you.
The Jammer requires an exit elbow where the compressor discharge is. Because the 3G truck's HY turbo has this built it, we had to fabricate one. It's tight down there, so we get a piece from Cummins, then cut and shorten it, and weld it back together. That way we still use a V-clamp and o-ring seal. This also necessitates a new intercooler pipe from that elbow to the intercooler. We provide that as well.
That intercooler piping will NOT clear the stock piping for the inlet of the turbo. This required us to make a pipe that would clear and yet still get up to the airbox. We did this and include it in the kit.
The height and angle of the airbox outlet is crucial for all of this stuff to line up. We made sure our piping fits to our airbox. To the others, it may or may not work. I know it will not work with the K&N or AirRaid setups. The AFE I have not even seen.
I have not seen a B1 on a 3G, so I don't know what they are doing, but I know that it too has a straight outlet for the compressor discharge. I assume they must also have some kind of elbow and intercooler piping.
If it's still not clear, I can get a pic of it all on Monday. Can anyone furnish pics of a B1 and the standard B1 kit on a 3G?