I tried some DirectDrive Mods, all worked, but I was not satisfied with the stability of the whole assembly. Stepper motor could move and result in extrusion problems.
So I designed my own, it is strong with reinforcements. Hope you appreciate.
This DD mod is fully compatible with this fan duct (and I really recommand it): https://www.printables.com/model/400687-kobra-go-custom-head-and-duct-with-stock-abl
Weight is only 49g, I recommend printing with only perimeters (set to 10), the same for top and bottom. This way it will be hardened. But you can use infill in place of, and then reduce weight of it.
Unfortunately there is a lot of supports, but you can place some support blockers for small holes.
For installation, nothing special, you only need extension cable for stepper motor, something like this (6pin 50cm):
https://www.aliexpress.com/item/1005003639231444.html
Update:
The author marked this model as their own original creation.