Thanks for the suggestion, I would prefer that but unfortunately I am all theory and havent had the chance to get my hands dirty on a project. Therefore, for experience sake and for a quick buildup it would be better if work is done on a donar 4x4 rather than building the entire frame from scratch.
for your location, you can be a valualbe help in the project. From your description the pickups sound suitable for the project, but their current usage may seem that these vehicles are probably in a bad shape and would be needing new engine and mechanics. If we are able to get the frame and add on good condition mechanics, then what?