I just found that parts list in the back of the manual. Go figure.
If you go to tower, and look at the parts list the motor and gearbox aren't listed. But if you search the part numbers they are found.
Yep. It looks like the same motor, but different gearbox.
I'm crossing my fingers that i don't need one. But I handed the controls to my son the other night and in his excitement he forgot up and down, and promptly nosed into the ground. I ordered new props but neglected to order a gearbox. The motor seems fine.