I punched a LGB train set back in the late 70’s or early 80’s (I really don’t remember when) to be used for the Christmas tree . Now that I have a grand child I’ve set it up again after letting it sit for 5+ years. The engine is a non-smoking locomotive 2010 and, I’d like to add a smoke generator. There are kits to purchase for this conversion but information on which model (2010 or 2010D) my engine is, is confusing. Underneath the engine it reads 2010. The cab is a dark brown with a black steam engine. What engine do I really have? And a little help with how to add a smoke generator would be helpful.