I might have made my Baker's Choice Cook Stove into a Rocket Stove. I found a Rocket Stoveonline that looked like it would fit entirely within my stove's firebox, with room to spare. Whereas it would not fit thru the fire door, it did fit through the stove plate. Easily I might add. So easily, that as long as it is cool, I see no reason that it cannot be removed for when I am baking bread and need the normal fire and put back in when all I want is heat.
Reason I cannot say for 100% sure that what I have done will work is because it is August where I live. Even though we often need heat and occasionally have snow in September, it is just too warm at the moment to test to see if will provide heat. Or even if my chimney will draw. I suspect it will though. If not, maybe Paul's DVD set provides answers as to how to make it draw.
I would watch out that the rocket is centered under the plate, I would be afraid blowing the rocket exhaust on the edge of the hole might create a hotspot that could warp the top.
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
"Family farms work when the whole family works the farm." -- Adam Klaus