Dallas has it right. the heat exchanger in the furnace will work in reverse, and it will heat the air in the furnace's burn chamber and flue, so it's not a good way to do it.
Put a fan on the MarkIII, this will make it MUCH more efficient, make a duct top like Dallas did for his coal stove, and duct the heat into the upper part of the house.. Put a cold air return duct to the inlet of the distribution fan on the MarkIII, and you will have a little coal burning furnace setup, and working right..
You will still get plenty of radiant heat off the stove's body to heat the basement.
Maybe you can talk Dallas into making you one of his custom stove top heat ducts??