Step 1: Open the door and securely support the door from the bottom as well as the side, making sure it cant fall over as you will be removing the door.
Step 2: Remove the stock spring retaining clips on the pins.
Step 3: Press or punch out the stock pins.
Step 4: Pull the door away slightly. Enough to access the bushings. (Be cautious of pulling any wiring running into the door.)
Step 5: Press or punch out the stock bushings.