I remixed the neck piece and pickguard to fit a humbucker inside.
The humbucker i used is a Guitar Tech branded one which came with an encore les paul so yours might not fit.
As long as yours is 70mm x 30mm it should fit.
The pickguard is a little thin in one place and did snap when i was making holes for the humbucker but as a retention screw is in that corner it works perfectly fine and holds the pickup without it shifting
I didn't add holes for mounting the pickup into the pickguard just incase the spacing is different.
I used 25% infill with 7 parameters as this is what I used for the original neck piece and it worked just fine
I am including my f3d file incase you want to adjust it to fit your humbucker.
The author remixed this model.