Possible mod to use elevator doors form alpha 21 to alpha 20

[jonsmith31415]

Hello, as the title suggest i was hopping to use the elevator door/elevator double door assets from alpha 21 to alpha 20 since i have a lot of mods that will be in alpha a20 for a while. I am not very experienced with mod making so i was wondering

1. is it possible

2.  how hard would it be

any help would be great full.

thank you