Good start, but there are some issues:
1. No tailgate, but there are unmodeled van doors (?)
2. Rear suspension collapses after going over any bumps.
3. Textures and model look like someone has cut off the top from the vanster. (P.S. In my opinion you could just leave the roof on and just add the wall between the cargo compartment and the cab)
Keep up with your work, as of now I can't give you a rating higher than this one, but maybe after some updates...