Are the Alco S2 & S4 body shells interchangeable between the S2 and S4 drive units ?

Thanks

I purchased a new Bachmann HO Alco S-4  at a great price from a leading hobby shop on line , and I am so impressed and pleased  
Right out of the box , it runs fantastic , with my Digitrax DCC system , the Alco starts so slowly  at first click showing  1 on the readout  ,
and the Alco engine sound is great , sounds just like the Alco switchers I watched as a kid  locally .
I am so happy with it , that I ordered another  one  
Now they both look great , Erie Lackawanna  rr , and both sound and operate fantastic    

Great products Bachmann , well done !

Would someone who has a NEW Annv 4-6-0  lettered ET&WNC  #11  PLEASE measure the height of the lettering and length of the lettering on the coal tender please , and post the info .

Thanks