I will limit my discussion to basics.
1) Take your time. You are about to eat an elephant. How? One bite at a time. Don't get aggressive and start cutting out a bunch of metal all over the place.
2) Do not lose the integrity of the entire door opening by removing too much of it at a time. It is known as the ring of death. It includes the rocker panel, hinge pillars, lock pillars, and the very top of the door opening.
3)Think in terms of you are about to start with a door and put the truck back together to fit that door.
Do not weld ANYTHING solid as you go. Use small self-tapping screws to temporarily hold everything together. This will give you the opportunity to make final adjustments prior to welding everything together once your doors fit perfectly.
These basics should save you many headaches.
Last edited by 52Carl; 06/09/2021 1:11 AM.