I put a tropical roof on my 74 Series III when restoring. I read somewhere they were not common on US import III's. Apparently they sold some with sun screens but very few with alpine windows and vents. I also read a few with tropical roofs originally intended for the middle east made it to the US but I can't find that reference. My roof came from an old '68 and I paid (great shape, just faded) $1000 for it. Cleaned it up, painted the roof itself limestone white, and the sunscreen white. Used the Badger Coach Works liner. Didn't need it, no it's not stock, but damn does it look Daktari awesome.