Ender-3 Pro upgrade for direct drive extruder and BLTouch auto leveling, a new trolley was purchased with an extruder mounting bracket.

I also purchased a Befenybay direct drive extruder, which came with a shorter (lighter) stepper motor.

The original hot end (which came with the Ender-3 Pro) was reused.

The extruder mounting bracket needed quite a bit of modification to allow correct alignment of the extruder with the hot end.

After cutting away pieces of the extruder mounting bracket, new holes were drilled in the trolley bracket. I attached the two with bolts and nuts.

Adding the Sovol Creality Ender 3 Pro 32-bit Silent Board Motherboard V4.2.7 with TMC2225 Driver Marlin 2.0.1 for Ender-3 Pro really makes it quiet and provides connections for the BLTouch.

BLTouch Bracket available on Thingiverse.com:
https://www.thingiverse.com/thing:596...

UniTak3D Ender 3 Direct Drive Upgrade Kit Conversion & Bracket

Befenybay Upgraded 3D Printer Extruder Parts with Stepper Motor for ANYCUBIC Mega-SCR10V6 Hotend J-Head for 1.75mm Filament (Extruder with Stepper Motor)

Automatic Bed Leveling Sensor 3D Touch Auto Leveling for 3D Printers Ender-3 Pro

Sovol Creality Ender 3 Pro 32-bit Silent Board Motherboard V4.2.7 with TMC2225 Driver Marlin 2.0.1 for Ender-3 Pro