pretty much! Just remove all the door cards, remove the old trim and make templates, then cutout and install the new trim. Although, inserting the new trim was quite fiddly as you need to feed it inside the lower seams of the door card and around the handle due to the handle being plastic welded to the door card which made the whole process of lining up and glueing down the trim a little tricky.
Recently got these ceramic coated. Genie WildCat headers:
Before:
After: