So i have a buddy that has an L40 cab so i measured his glass. Everything measures right. I know i probably wont get defrost but thats fine. I think the next step will be to find some glass. I would think my local kubota dealer would have some.
You can add defrost as an add on. My L5030 had internal defrost elements, but my L5740 has the type you glue on. I preferred the internal type, but they didn't have one.