Good move. Email me at the one in my profile and I'll send you a pic of the way I connected the armatures together. A real simple solution using the "foot" cushion from (I think) a cabinet door. I can send you one as I have more. But it's going to depend on what's underneath the top of your Lionel tower. KD described having to use a "bottle cap" to mount the motor. My MTH had a bottle cap like structure underneath that held the vibramotor. It had a hole in the center and was perfect. The Faller motor does have a little quirk but is dead silent and has prototypical speed.
Roger