Yes - you can put a wood burning stove in your fireplace. The opening in the back of the wood burning stove should be about the same size as the opening in your fireplace. Make sure that you have a screen or grate to protect your floor from sparks and embers.
Yes, you can put a wood burning stove in your fireplace. Make sure to check with your local fire department to see if there are any restrictions or regulations on wood burning stoves in your area. And always follow the manufacturer's instructions for using and installing a wood burning stove.