570 vs 871 in glider

[Brock]

Here is the situation. Looking at a western star glider tri drive truck (bush truck). The sales guy says they can do a 871 in it but they have to add all the emissions stuff which makes it alot more expensive.... but seeing his build program and options, I think he's full of it and can't do it.

I see there is a option for a factory installed signature series Cummins or prep kit for one so here is where my question comes in.....

Any way to disguise a 871 as a Sig series with a upgraded turbo? I don't know if hard parts are different or similar, if ecm are similar or not? Etc etc.

It would be nice to have all the benefits of the engine I've come to love without all the extra useless crap on there, after all...... it is a glider.