Some have done it with Brushless hollow shaft gimbal motors. Or pancake
If you search for one or two of these words you could find more.
Somewhere there is a link to a Chinese company, who make sets with motor and inner shaft to mount directly on the requested tractor model.
Edit found link, look a bit down om their site to see how:
https://www.aliexpress.com/item/4000938654770.html
1 Like