The shell on this 2235 is stamped 2224.
Stamped, or is the number cast on the inside of the shell?
It' been awhile. As I recall, the 225E loco has a post inside the floor of the cab. The tender has a long draw bar with a hole in the end that fits over the post to connect the engine and tender.
The 224E loco has a draw bar with the end bent down, and may have a ears making it look like a "T".
The matching tender has a shorter draw bar with a slot.
I think the metal tender shells are the same.
Someone else should verify what I have written.