80's TMNT Van

Ever since I was a kid, I've always liked vans. I like the A-Team van, but my most favorite one was the one from the 80's TMNT series....

I made up a gallery - http://s292.photobucket.com/albums/mm13/knight_jp/Turtle%20Van%20Pictures/

Most people seem to think that it looks like a VW bus (The ones with the engines in the back)... I've seen that VW and many have tried to make replicas which look nothing like the van in the series.... (missing the rear doors)
Knowing its an animated series, we cannot expect tech-specs to be accurate or drawings to specify a perfect make and model (although I've seen Japanese anime cartoons do so).

In my opinion it looks more like a modified 50s step-van. Have a look at the gallery and the pictures below and vote for the one you think is a perfect candidate for an authentic replica.

http://carphotos.cardomain.com/ride_images/2/4602/1281/24003140005_large.jpg
http://germancarscene.com/wp-content/uploads/bus3-20-10-06.jpg
http://www.nitroplayer.com/photos/Volkswagen-Bus.jpg