Help with Santa Fe 2333

What number boards are in the two A units Fran? 

You mention that neither have Magne-Traction. Only the powered chassis would have this feature, the non-powered A unit would not.

one says 2333 and 2343 on the other. Oh ok, the heavier one the 2333 does not have the magnetraction. It's the 2343 that is much lighter but also has the 2333-20 number on the bottom. 

2333-20 on the bottom is just the part  for the frame

When running together, most people won't be able to tell the difference between them!

Great looking set...

2333s AND 2343s all used the 2333-20 frame, so don't go by that part number. Since the frame with the motors on it doesn't have Magnetraction, it's a 2333. The dummy either has a 2343 shell or just 2343 number boards. The same shell was used for both the 2333/2343, and only the number boards changed, so all you really need to find is a set of 2333 number boards.

If the GM decals and stamped lettering match on both shells, then simply find a set of 2333 number boards and relax.

I apologize mr. Ogr webmaster. I am very new to the forum  experience. As well as RR trains and such.  I am not even sure which forum my questions should be in, mainly because I don't even know what all the # and letters stand for or what Gauge means. I am trying to learn all I can in order to be a good steward of all I have been giving. I hope I am learning quickly.