Buying Advice Need bottom seat and cushion for JD Z920A

[Z920A]

I am in need of a bottom seat for my JD Z920A. I also need the cushion or foam and the cover for the part that you sit on. Does anyone know where I could get a good after market seat for my mower? If you can help I would really appreciate your help. Thanks

 

[bertsmobile1]

Mower seats are very expensive.
Boat seat are very cheap.
Both are designed to be out in the wether & boat sets do not tend to soak up as musch water.