Most high-wing Cessnas have Fowler flaps, 172's, 182's, 336/337 and a bunch of others that share the same basic wing. I built a L-19 from Roy Vaillancourt plans about 15 years ago which had them. The plans only allowed for 40 degrees, but I modified them to allow the full 60 degrees the full scale Bird Dog had. I sold the plane before finishing it, one of my big regrets.





Full scale: