I had one, and there wasn't a smoke unit - but a Seuthe can be fitted in easily. Any other make will probably take a little more work. It wasn't a great puller, and doesn't have the detail of later Hudsons, but it was affordable to me at the time. Williams used to sell a flywheel kit, I don't know where you might find one now.
As an extra appeal, the tender originally had no coal load. I used to load mine with coal via a Lionel coal loader. It always impressed people.