Hello Djoi,
I hope is not late for replying your post.
I'm from Argentina and I'm delighted to know there's a Douglas (or much more) in Brasil.
There's plenty of spares here as there are more than 60 post war Mk3s around the country.
You can send me an email for any enquiry or help you need.
Hope to hear from you soon.
All the best
Gabriel
gabriel@petitdemeurville.com