Rockauto (I checked) can provide you will all the parts you require. Probably cheaper than domestic Brazilian parts suppliers (just a guess) tho shipping may be expensive and slow (or expensive and almost overnight.)

I'm pretty sure that they ship international, however, if they don't you can have them drop shipped to me and I'll relabel them and ship them to you for cost.

Sorry you're having such a hard time with your truck, btw. If there's any way I could help, I would. I had a friend back in the early 1970's who had a 58 Corvette, with a 283 engine. Cracked his crank in half and drove it for about a month that way. When it finally came out, it was in 2 pieces!