Great looking B unit Paul! There don't seem to be any of those East of the Mississippi, the last ones I can remember were the long-gone Pennsy GP9 B units.
I guess I have what could be considered the exact opposite of the BN unit, a road slug. It has a cab with controls, lights and a horn - but no prime mover! It is semi-permanently mated to a GP40-2. These things are all over the place on CSX.
My model is kitbashed from a Kato GP35. The only aftermarket parts are some Evergreen .010"-thick sheet styrene to cover the holes where the radiator fans and grilles were formerly located, and some Tichy grabirons. Still need to add ditch lights though...
Here's a link to a prototype photo: http://www.trainweb.org/csxphotos/photos/RDMT/2206CSX-bc.jpg
The slug model is powered while the Athearn GP40-2 is a dummy unit. Since the two are essentially a single 8-axle loco, I ran a set of wires from the 'backup' light outputs on the slug's decoder to a YelloGlo LED headlight in the GP40-2, so I can run the consist with either unit forward. [Of course I always have to key-in '2206' on the throttle.]
Old post but I so want to make one of these pairings and paint it up in Conrail Blue I have been following the unit assigned in Dewitt NY and have taken a bunch of good pictures but I get the feeling though that it's not a real easy task and as a noob I should start elsewhere.