generally no

有否可能买一个别的牌子的室内机，和Toyo的室外机配合使用呢？
I am afraid you have to get a new one.
if this is in China, you can find someone to re-wind the motor for cheap. but in USA, no way.

Don't get the window type. It requires significant work on existing window if you want to make it look good and insulated well. Also much noisier, if you run it overnight it is unbearable.
Still get a two-units type.