A hardwareless bracket to mount the Ender 3 extruder on its side allowing more clearance of the filament path to the z-axis leadscrew. (source)
I found the PLA starting to chew out the soft plastic of the stock extruder. To reduce wear I decided to add a length of PTFE tube to the input side but mounting is problematic due to filament path touching the leadscrew. An extra 5mm of bracket would have been nice.
Turning the motor on its side allows plenty of clearance to add a tube coupler to the input side of the extruder.