I would like to find out, if I order the new Great Northern F7 body shell, will it fit the locomotive I currently have? It is the Bachmann Plus series from the 90s (maybe) and it has the original Union Pacific body shell it came with. I never really ran it at the time, but it runs like new now on standard DC. I'm just not ready to go all in on a DCC conversion just yet and buy the GN F7 locomotive new. Thanks!