[Neweller]

Thanks Jon and Sean for the info and efforts. It's kind of crazy that you can look up step van and find these kind of parts.

This link goes straight to the page from the site Sean posted: Roof Wall Mount Vents Stepvan

It looks like selection "K" may be the right motor, the fan "L" right next to it looks the same as well, I don't have the part numbers handy from when I last worked on one of my coaches but maybe someone can verify if this is correct. I know most of the fans in the cracker box coaches are closer to "C" the rinky dink looking one. Now if a person wanted to up grade to a quieter larger fan he could more than likely go with selection "A".