A HUGE thank you to Eric. This would not be possible without his unbelievable precise files. I used to rebuild Caterpillar engines and it is truly remarkable how much detail Eric has in all of his models. Please visit his page at https://www.thingiverse.com/ericthepoolboy/about and view all his models.

I built an adapter plate to mount the speed controller. I will post those pics and stl file.

Thank you again Eric!!!!!