There were supposedly a few cc sb OBS trucks in 97 but they are like bigfoot. They've been spotted but the pictures are fuzzy.
I actually know someone who has a 97 F-250 4x4 PSD Crew Cab Short Bed (First time I saw it, I almost broke my neck....). Next time I see it, I will take a few pictures of it. Heck, I'll even make sure to get my truck in the picture so we know it's real.......