As a restoration project, as always, the trim, such as headlights, tail-lights, chrome, etcetera... will be the most important. Trim pieces are always the hardest to get. For these "euro-Fords", sometimes your only source will be UK sellers who will charge an arm and a leg for trim parts.
For mechanicals, you can salvage from other cars, or, in the case of engines and trannies, frankenstein something for the car. In fact, some garages can even frankenstein suspension parts, if need be.
I have no personal knowledge of Granadas (except those fond memories of riding in one in High School... great car...), but the Ford Escort Club of the Philippines might be able to help. They've got their own subforum at
http://forum.fordclubph.com
Good luck!