Are replacement keyboard/top cases compatible across different models?

I have a Toshiba Chromebook 2 2015 with a Canadian English keyboard, and would like to replace it with a USA keyboard (the enter key bothers me as I am used to the enter key of the USA version.)

My question is- do I have to buy a keyboard/topcase specific to the Toshiba Chromebook 2 2015, or can I use one from the previous Toshiba Chromebook 2 model?

All the Toshiba Chromebook 2 models look physically identical, so I imagine this would work. I understand I would be losing the backlit keyboard feature if I did so, as I would just like the cheapest replacement possible.