Yes it is, duh. My mistake. But my comments above apply. They are really a nice engine and K-Line did a great job on them. Well all except the smoker! 
If the op's err setup does not need the cherry switch, the conversion to fan driven smoker is doable. If it does though, I think the best option is a reed switch with magnets. Another option would be one of grj's super chuffers and a chuff generator. That would allow for puffing smoke with no trigger switches needed. But whether there is room for all that is another story.
Rod
