The previous owner of the cab had started to remove to drip rail on the passenger side of the cab. I decided to give it a try. I did lots of research on here beforehand and the main thing I learned was to take my time. I thought the toughest part was the pie cut area where the a pillar ties into the roof. I used some 1/4" rod around the door frame and tired it into the a pillar. There was also a good article in a classic trucks magazine that was helpful.
Although I'm glad I did this modification, I probably wouldn't have done it if the previous owner hadn't started it. It was very time consuming