Getting new car parts in Dar

I am  driving a nice old 1989 Mitsubishi Pajero, and I need several expensive spare parts for the car. (If you see one with lots of black smoke behind it, it's probably me).

Any tips how to get reliable parts cheap? I can get them from Holland, but I do not know if they will arrive if I have them send over:/.

Any advice is welcome.

Dutchman75