The pilot "underneath" the Bachmann plow is not a full pilot. It's a triangularly shaped affair over which the plow sits, mounted by two large screws from underneath. If you were to remove the plow, you'd have to build a new pilot. Bachmann's web site may have the parts drawings which would give you an idea.
Bachmann is currently showing the Snowplow as an accessory you can buy on their site. They also have 2, count them, 2 different Pilots. A "Switcher" version, and a "Road" version. The last I heard, they don't have them in stock yet, but are planning to in the future(?). I have only rarely been successful with buying accessories from Bachmann, so I will hide and watch and only dart out when I see proof with my own eyes!