after deciding, you'll need to make a new vehicle. I would suggest going with either the etk 800 series, or the gavril roamer, the etk having more accurate construction type, rigidity and crash safety to a modern durango, and the roamer being of more accurate size and shape, despite being body on frame. secondly, you will need a JBeam to base it off.
dae format? if not, you'll need to go to file>export> in blender.
