Hey Harley,
Obviously, my answer was partly facetious. I figured by now someone would have come up to bat on this one. I don't have any N-scale here to look at, but I am going to attempt this on a couple of IHC's in HO.
Please keep in mind that this is strictly a generic opinion and untried. You have to determine where the draft gear box is going to be located height-wise and front-to-back. Then start hacking. A chisel Exacto blade is very useful, as is a Dremel tool. Those 19.95 generic "dremels" from Wal-mart work just fine.
You might find that there's nothing for the mounting screw to go into. You can add in a bit of styrene or aluminum with a tapped hole. It's a kitbash, after all.
I suspect that we'll find the appearance to be not exactly prototypical, but you gotta couple, right?
I hope someone who's done this or at least has one to look at will chip in for you.