I just finished installing the Bachmann motor into the Atlas/Rocco E7. It runs great. When the Rocco burned up, I thought about using the Kato motor like I have with other engines, however, after running newer Bachmann engines and finding no cause for alarm, I used the Bachmann. Interestingly, the Rocco drive system and the Bachmann Spectrum drive system (diesel) are nearly identical. On decal day, I'll put a little "B" somewhere on the engine.