I need more information this specific automobile; 1985 Mercedes 308D. 
I would like to know all the specifications/statistics including:
miles per gallon, weight, size, horsepower, etc.  How many were made,
and how many came to the United States.  Beware, the 308D is not a
typo on my part and I am not talking about a 300D.  The 308D is a much
more rare auto, it is a large commercial van.

I have found a bit of information a lot of other Mercedes 308D's but
not the 1985. Are you sure it is a 1985?

You may find this interesting:

http://www.mercedes-benz.com/content/mbcom/international/international_website/en/com/international_home/home/heritage/museum.html

Yes it is a 1985.  I've found a couple other old ones like it for sale
overseas.  There's has also been a couple like it sold on ebay.