The F-7 & F-7a  normally numbered 307 I want to swap the shells with some other diesel shell.
Or would it be easier to sell the F-7 and F-7A DCC and buy different models. The reason is- these engines ( I have four of them) work so very well, I'm not good at re-painting, and they are getting confusing as to which one I'm working with. Also buying the shells would be cheaper than replacing the entire engine. Any suggestion would be greatly appreciated.

Question.  If you have two train sets (both identical DCC train systems), can the two train sets be connected via the train track and not cause the EZ controllers to fail, since both are pulsing square wave DC with a continuous 1 amp on the tracks.  Similar to AC systems, I could devise a synchronizing circuit, where both pulses from each EZ controller are timed exactly the same.  Basically I'm looking at whether anyone has tried this with success minus the synchronizing circuit to connect two train systems where the tracks are connected without adverse issues.. 

This is related to a previous post: Can two (2) EZ Command Controllers Work Together? 

Here is the scenario:  Two kids wanting to run their own trains.
Problem:  I read the last discussion (2013) and its reply stated to obtain the Walk around companion controller (Model 44907), then I read that the Walk around companion module was discontinued (2016).
Question:  The last discussion didn't go into detail so I'm presenting that detail.  If I connect two EZ command control centers (Model 44901):  One as the main connection to the track and power supply, then connect the other command control center without connecting the power or connection to the track can this support operating two trains where each kid can control their own train from each control center?  Basically providing an individual controller similar to the walk-around companion which currently I can't seem to find.

I have a simple question, I am converting my rail system from DC to DCC.  I've purchased the DCC locomotive Bachmann model, but the price was right on this new model DCC locomotive.  I do not want it's shell, a Santa Fe shell.  Is it possible that the shell from my DC locomotive (BNSF) replace the shell of the DCC locomotive?  Both locomotives are the same GP 38, and both were made by Bachmann.  In short, only a shell swap from DC to DCC.  Would there be any interferences with DCC body with a DC shell?